Canine Teeth Facts: Interesting Variations

Even though we consider dogs part of our family, how much do we know about their physiology and health? What are the most common diseases? What is the best way to take care of your dog? How to choose the best food and supplements? This and many other questions pose a challenge when it comes to canine health and well-being.

For instance, did you know that dental disease is one of the most common disorders reported in canines? In fact, 80% of dogs tend to develop some sort of periodontal disease by the age of two. Regular dental care is recommended but let’s see what else you should know about your pet’s teeth and those important canine teeth facts. Canine teeth, also called cuspids, eye teeth, or vampire teeth, are the longest and most pointed teeth in mammals, primarily used for holding and tearing food. In dogs, these are often referred to as a dog's fangs due to their pointed shape and anatomical position under the eyes. The upper human canine teeth are called eye teeth because they are positioned directly beneath the eyes.

1. Dogs Go Through Two Sets of Teeth: Baby Teeth and Adult Teeth

Like people, dogs have baby teeth which they later replace. These teeth, also known as milk or deciduous, are nearly the same as adult dog teeth but slightly smaller. They are notoriously sharp, often lacking the dense mineralisation found in permanent teeth, which is why puppy nips feel like needles!

Between four and six months of age, these teeth start to exfoliate. In humans, this process tends to last for a couple of years, while in dogs, the transition is pretty fast and they lose their baby teeth in a matter of weeks. Humans typically have four canines, two in the upper jaw and two in the lower jaw, which erupt between the ages of 9 and 12 years. Lower canines usually erupt around the same age and play a crucial role in bite stability, jaw movement, and overall dental health. The tooth will become loose and eventually fall out. Most owners don’t even notice the shedding because the teeth are often swallowed during a meal or while gnawing on a toy, which is perfectly safe and natural.

2. Compared to Humans, Adult Dogs Have More Teeth

When puppies, canines have 28 deciduous teeth that they shed to make room for permanent adult teeth. Adult canines have 42 teeth, while humans have 32. This count in humans includes the wisdom teeth, also known as third molars, which are located at the very back of the mouth and are often removed in adulthood.

Adult dog teeth start forming before canines are born and later on, when your dog is old enough, they push through into position as their milk counterparts are shed. In humans, canine teeth typically erupt between the ages of 9 and 12 years, following a predictable sequence as part of normal dental development. These 42 teeth are strategically placed to handle everything from delicate grooming to the heavy-duty crushing of bones. If a baby tooth doesn't fall out (a persistent deciduous tooth), it can block the adult tooth, leading to overcrowding and hygiene issues.

3. Dogs Use Their Teeth Differently from us

In terms of appearance and chemical structure, dogs' teeth are similar to ours. However, their shape and size differ significantly. You’ve probably noticed that their long, sharp teeth, especially the canines, have a pointed shape that makes them the most prominent teeth. The primary function of canine teeth is to tear and grip tougher foods such as meat and vegetables, as they uniquely combine strength and sharpness, making them ideal for ripping apart these textures. They also play a major role in guiding jaw movement during chewing and speaking, helping to distribute biting forces and maintain proper occlusion and jaw function. Canine teeth are positioned in the dental arch to ensure their proper position for effective biting and overall oral health. The upper and lower teeth work together to maintain alignment and efficient chewing, with the lower teeth, including the canines, playing a crucial role in bite alignment and chewing function.

They are primarily designed for pulling, lifting, grasping, and defence if needed. Dogs also come equipped with the big carnassial teeth that enable slicing action. Human teeth grind food against one another, crushing it with molars, which isn’t the case with canine teeth on dogs. Humans have adapted to cut food with tools, reducing the need for large, rough bites that would require extensive use of canine teeth. Dogs can’t smash their food because their teeth aren’t meant to work that way. Their jaw hinge is a simple “ginglymus” joint, meaning it only moves up and down like scissors, lacking the lateral (side-to-side) movement humans use for grinding vegetables.

Canine teeth, or cuspids, are designed primarily for tearing and gripping food and play vital roles in jaw alignment, defence and social signalling.

4. Canine Teeth Root Structure is Slightly Different

The dog’s root structure is similar to that of humans; however, it has three upper molars with two roots and two lower molars with three roots. Their roots are quite long and if you ever seen a canine’s tooth, you would be surprised by its length. The maxillary canine, or upper canine tooth, has the longest root of any tooth in the mouth, providing exceptional stability and allowing it to handle significant biting forces without loosening. Both maxillary and mandibular canines have prominent roots, but the upper canine teeth, known as maxillary canines, are especially notable for their anatomical significance in guiding bite alignment and contributing to facial aesthetics.

In most cases, the visible crown represents only one-third the length of the tooth, while for the incisor teeth, the crown is only about one-fourth the length of the tooth. The root of the canine tooth extends well below the gum line, providing crucial support and anchorage for the tooth. This deep anchoring is a biological necessity; it allows the tooth to withstand the lateral forces of a dog tugging or pulling without the tooth being ripped from the socket.

5. Cavities Rarely Happen

Dogs rarely have cavities because the bacteria in their mouth aren't the same as ours. Specific bacteria that live on the flat surface of our teeth cause cavities to appear. Dogs don't eat sugar like humans, which is one of the main causes of cavities.

The Science of Dog Saliva: A dog's saliva is highly alkaline (approx pH 8.5). This high pH neutralises the acids produced by bacteria that cause cavities. However, this same alkalinity encourages the mineralisation of plaque into tartar (calculus), which is why dogs get gum disease rather than holes in their teeth. If a cavity does occur usually from sweet treats like bananas or sweet potatoes. It must be removed and replaced with a composite filling.

6. Understanding Bite Force

The dog's bite force is between 250 and 325 PSI (pounds per square inch), while an average person has a bite force between 120 and 220 PSI. A domesticated dog doesn't have a bite force as strong as you think. For example, a two-pound Macaw has a bite force of 375 PSI, close to a wild wolf with a bite force of 400 PSI.

Some breeds, like the American Pit Bull Terrier, have a pretty bad rap. Although considered vicious, the Pit Bull Terrier has one of the lowest bite forces among large breeds. Rottweilers and Shepherds have the strongest bite amongst domestic dogs due to their larger zygomatic arches (cheekbones), which allow for larger muscle attachments.

Tips & Advice: Maintaining Healthy Teeth

Dogs require regular teeth cleaning

Consider getting a dog toothbrush and paste and start cleaning your pet’s teeth regularly. This is an essential step in their healthcare routine, so don’t skip it. Dogs rely on us to help them clean their teeth. Improper brushing or neglect can lead to gum recession, which may cause sensitivity, aesthetic concerns, and make teeth more vulnerable to dental problems, especially around the canine teeth. This also means taking them to the vet for regular dental exams to ensure they don’t have cavities, broken teeth or gum diseases. If you notice any dental problems, consult a dental professional for proper diagnosis and treatment. Dental problems can be painful for dogs of any age and because they are stoic animals, they often won’t show pain until the infection is severe.

Choosing the best dog dental sticks

With so many factors to consider, choosing dental sticks for your dog is not easy. Here are things to keep in mind:

• Shape Matters: We recommend star-shaped dental sticks. The ridges are designed to reach the crevices between canine teeth in dogs as they chew.

• The Right Texture: Pups with sensitive gums require softer textures, while power chewers need tougher options.

• Ingredients: Look for natural, high-quality ingredients. Avoid generic names or by-products.

• The Petz Park Range: For a comprehensive approach, many owners use the Petz Park Dog Dental Care range, which includes everything from dental powders to specific treats designed to maintain oral hygiene without the fuss.

Supplements for Dogs and Dental Health

Investing in high-quality supplements for dogs means investing in your pet's long-term health. A comprehensive multivitamin for dogs provides the foundation for a strong immune system and healthy oral tissues. These supplements should ideally include essential components such as zinc, magnesium, turmeric, iron, vitamin B3, vitamin B5, copper, cobalt and folic acid to support gum health and overall vitality.

Many modern dental powders also include Kelp or seaweed enzymes, which work through the saliva to soften tartar. Our dental kelp for dogs is a popular choice amongst owners seeking a fuss-free way to manage oral hygiene. By simply adding this to their meal, the natural enzymes help break down the bacterial bond that holds tartar to the tooth surface.

Dental Canine Chart: Identification and Composition

Dogs have four distinct types of teeth, each with a unique purpose. Canine teeth, also known as cuspids, are the largest teeth in the mouth and play a key role in the appearance of the smile by supporting facial structure and enhancing overall dental aesthetics. Canine teeth also help support and protect surrounding teeth during biting and chewing. Notably, human canines are smaller than those of many other mammals, such as dogs, which have larger, more pronounced canines for their predatory lifestyle.

Tooth Composition:

• Enamel: The hardest tissue in the body; protects the crown.
• Dentine: The bone-like bulk of the tooth that protects the pulp.
• Pulp: The living centre containing nerves and blood vessels.
• Cementum: The connective tissue that binds the root to the periodontal ligament.
• Anatomical features: Canine teeth have a prominent lingual surface, a well-defined cusp ridge, and distinct distal marginal ridges, all contributing to their conical crown shape and functional strength.

Dog Dental Checkup: The Home Checklist

Common canine tooth problems include impaction, fractures, infections, and alignment issues, which can lead to significant oral health complications if left untreated. Recognising these issues early is crucial for your dog's dental health.

While professional veterinary cleans are essential, a weekly Home Dental Checkup is your first line of defence against silent infections. I often see dogs brought in only when they stop eating, at which point the dental disease is already advanced. Catching gingivitis early can save your dog from pain and save you from expensive vet bills. Early treatment of chipped, fractured, or injured canine teeth helps prevent further damage, infection, and complications, preserving the tooth's structure and function.

Key Takeaways

• Rapid Transition: Puppies transition to adult teeth in weeks, much faster than humans.

• Structural Depth: Only 1/3 of a dog's canine tooth is visible; the rest is a massive root system.

• Chemical Resilience: Dog saliva is alkaline, which protects against cavities but promotes tartar.

• Bite Mechanics: Dogs possess a scissor bite designed for shearing, not grinding.

• Comprehensive Care: Effective hygiene requires a combination of brushing and nutritional support, including multivitamins and dental kelp powder.
  

Frequently Asked Questions

How many canine teeth do dogs have?

Adult dogs have four canine teeth (fangs), located at the corners of the mouth (two on the top and two on the bottom).

Why are dog canine teeth so long?

The length of dogs' canine teeth is an evolutionary trait that allows them to puncture and hold onto objects or food securely.

Can I use human toothpaste on a dog?

No. Human toothpaste often contains Xylitol (toxic to dogs) and fluoride, which can be poisonous if swallowed by pets.

How often should I clean my dog's teeth?

Daily brushing is the gold standard but using dental sticks or dental powders daily is a highly effective alternative for maintaining oral health.

References

• Canine Teeth - VCA Animal Hospitals: Dental Anatomy in Dogs.
• Periodontal Disease in Canines - American Veterinary Dental College (AVDC) 

The Complete Guide to Canine Dental Health

• Daily Care: Put those facts into practice with essential dental care steps every owner should take.
• Professional Cleaning: Discover the best dog dental cleaning products for home use.
• Prevention: Understand the risks by reading about gum disease in dogs: symptoms, causes, and prevention.
• Dental Chew Options: Read about dog dental chews and find out the answer to: Are Dental Sticks Good for Dogs? 
• Guide: Learn about teeth brushing and dental care by reading about Dog Dental Care