A Rat Terrier owner's most important dental job is staying ahead of plaque, because small breeds like this one develop periodontal disease earlier and more often than bigger dogs. Daily oral care — a brushing habit, an effective dental chew, and an annual veterinary dental exam — is the combination that keeps a 10–25 pound terrier's teeth working into old age.
We've spent more than 25 years at Ark Naturals making dental chews in the USA, and small, busy farm terriers like the Rat Terrier are exactly the dogs we had in mind: too energetic to sit still for long brushing sessions, too small to shrug off tartar, and too fond of chewing to waste that instinct on the wrong things.
Why does a Rat Terrier's mouth need extra attention?
The Rat Terrier carries a full set of 42 adult teeth inside a compact, wedge-shaped skull. That's the same tooth count a Labrador has, packed into a fraction of the jaw space. Even though this breed's muzzle is proportionally longer than a Chihuahua's or a Pug's, the math still works against small dogs: less bone around each tooth root, tighter spacing between teeth, and gum tissue that has less margin before disease reaches the root.
Veterinary dental researchers consistently find that dogs under about 25 pounds show periodontal changes years before large breeds do. The American Veterinary Dental College notes that most dogs have some evidence of periodontal disease by age three — and small breeds sit at the front of that line.
Rat Terriers add a couple of breed-specific wrinkles. Some lines are known for bite irregularities, and like many small breeds they can retain deciduous (baby) teeth, where the puppy tooth never falls out and the adult tooth erupts beside it. Two teeth crammed into one socket creates a plaque trap that no chew can reach. Your veterinarian will check for this at puppy visits, which is one more reason those early appointments matter.
What dental problems show up most in small terriers?
Periodontal disease. This is the big one. Plaque bacteria mineralize into tartar within days, tartar irritates the gumline, and inflammation gradually destroys the ligament and bone anchoring each tooth. In a Rat Terrier, the lower incisors and the tight premolar rows are common trouble spots.
Retained puppy teeth. Watch for a double row of teeth between four and seven months of age, especially the canines. Retained teeth usually need extraction — a quick call to your vet clinic is the right move if you spot one.
Crowding and rotation. Teeth that erupt at odd angles create pockets where food and bacteria collect. You can't fix crowding at home, but you can keep those pockets cleaner with daily mechanical cleaning.
Fractured teeth. Rat Terriers are enthusiastic chewers descended from working farm dogs. Antlers, cow hooves, and hard nylon can crack the large upper carnassial teeth. A good rule from veterinary dentists: if you can't dent it with a fingernail, it's too hard for your dog's teeth.
How do you build a daily dental routine for a Rat Terrier?
Start with the brush. Nothing beats brushing for disrupting plaque at the gumline. Use a soft-bristled dog toothbrush or a finger brush with an enzymatic pet toothpaste — never human toothpaste, which contains ingredients dogs shouldn't swallow. With a wiggly Rat Terrier, keep sessions short and upbeat: ten seconds a side at first, building up over a few weeks. Aim for once a day; even three or four times a week makes a measurable difference.
Add a dental chew that actually works. The American Veterinary Medical Association recommends daily home care alongside professional cleanings, and a well-designed chew turns your terrier's natural chewing drive into scrubbing action. Our Brushless Toothpaste dental chews pair a textured outer layer with a toothpaste center; the 20–40 lb size suits Rat Terriers at the top of the breed's weight range, while lighter dogs should size down — you can compare every option in our shop all dogs collection, where our DENTA-METER shows which formula fits your dog's starting point. All of our chews are made in the USA with no artificial flavors or colors, and they're suitable for dogs 12 weeks and older.
Step up protection for tartar-prone dogs. If your vet has flagged early gum redness or your terrier builds tartar quickly, our Soft Shield Protection+ soft chews include Asta-Shield, our astaxanthin antioxidant blend. Astaxanthin is a carotenoid studied for its antioxidant activity, and the soft texture works well for dogs who gulp harder chews.
Keep water fresh and inspect weekly. Once a week, flip your dog's lip and look: white teeth and pink gums are the goal. Yellow-brown buildup, a red gumline, or a suddenly sour smell all deserve attention before they escalate.
A note on expectations: chews and brushing manage plaque, but they don't remove established tartar below the gumline. Only a professional cleaning under anesthesia does that, so keep your veterinarian in the loop on how often your individual dog needs one.
When should you call the vet about your Rat Terrier's teeth?
Small dogs hide oral pain well — a Rat Terrier will usually keep eating right through a toothache. Book a veterinary visit if you notice any of these:
- Breath that has shifted from "doggy" to genuinely foul
- Bleeding gums, or blood spots on toys and chews
- Chewing on one side, dropping kibble, or head shyness
- A cracked, discolored, or loose tooth
- Pawing at the muzzle or rubbing the face on furniture
- Any lump or swelling along the gums or under the eye
Your veterinarian can grade the gum health, take dental X-rays to see below the gumline, and advise you on cleaning frequency. Many small-breed dogs benefit from a professional dental by age two or three — your vet can tell you where your terrier falls.
Rat Terrier dental care FAQ
At what age should I start brushing my Rat Terrier's teeth?
Start handling the muzzle and gums in puppyhood, around 8–12 weeks, so the sensation is normal before adult teeth arrive. Brushing matters most once permanent teeth erupt around six months. Dental chews from our lineup are appropriate from 12 weeks on, sized to your puppy's weight.
Are Rat Terriers more prone to dental disease than other dogs?
As a small breed, yes — dogs under roughly 25 pounds develop periodontal disease earlier and more severely than large dogs on average. Individual genetics and home care shift the picture a lot, so ask your vet to assess your specific dog.
Can dental chews replace brushing for my Rat Terrier?
They're partners, not substitutes. Brushing reaches the gumline directly, while a daily chew extends that mechanical cleaning and covers days when brushing doesn't happen. Dogs receiving both consistently tend to show the best checkup results.
What should a Rat Terrier never chew on?
Skip antlers, hooves, bones, hard nylon toys, and ice cubes — all common culprits behind slab fractures of the big premolars. Choose chews with some give, and supervise anything your dog can splinter or swallow.
How often does a Rat Terrier need a professional dental cleaning?
It varies by dog. Some need yearly cleanings, others can stretch longer with diligent home care. Your veterinarian's exam — ideally with dental X-rays — is the only reliable way to set the schedule.
The takeaway for Rat Terrier owners
A Rat Terrier can easily live 15–18 years, which means those 42 teeth need to last nearly two decades. Daily plaque control is what makes that possible. Brush when you can, offer a properly sized dental chew every day, watch for the early warning signs, and let your vet handle the deep cleaning. We've built our chews around exactly this kind of partnership — your effort at home, your veterinarian's expertise, and a chew your terrier genuinely looks forward to.