Tüylüm
A very small, fine-boned and lively dog, 8.7–10.6 in (22–27 cm) tall and up to 6.6 lb (3 kg), in a smooth-haired or long-haired coat. Being tiny is both its charm and its responsibility: fragile bones, teeth and blood sugar all need watching.

The Russian Toy is one of the smallest dog breeds in the world. It has upright ears, long legs and an elegant build, and it comes in two coat varieties, smooth-haired and long-haired. It was revived in Russia in the 1950s and is now seen at dog shows across Europe. On this page we've pulled together its temperament, care and the health issues that are talked about most in very small dogs, using breed standards and scientific sources.
The FCI standard describes the Russian Toy as active, very cheerful, neither cowardly nor aggressive, curious about the outside world and strongly devoted to its owner. The Royal Kennel Club adds that it is loyal and eager to please, which makes it suitable for agility and obedience work. It was originally bred as a watchdog and ratter, so don't be surprised by a "I'm in charge here" attitude in a tiny body.
There's a common trap with dogs this small: they're so tiny that it's easy to raise them without rules. But a Russian Toy needs limits, a regular day and socialization like any other dog. Introducing a puppy to different people, sounds and places makes excessive barking or timidity less likely later on.
Breed traits describe general tendencies. The parents' temperament, early socialization and training shape an individual dog's personality as much as its breed does.
The Russian Toy suits people who want a dog that takes up little space but still wants play and walks. The Royal Kennel Club considers the breed suitable for flats and for homes with a small or medium garden.
| Situation | A good fit? |
|---|---|
| Apartment | Yes; up to an hour of exercise a day is enough |
| Family with small kids | Needs care; its bones are fine, so it must not be dropped, and kids shouldn't carry it unsupervised |
| Other dogs and cats | Play with big animals should be supervised because of its tiny size |
| Long hours alone | May struggle because it is so attached to its people; teach alone time gradually |
| First-time dog owners | Possible, but be ready for its fragile build and dental care |
For how your dog behaves when left alone, see our article on separation anxiety in dogs.
According to the history in the FCI standard, the English Toy Terrier was one of the most popular toy dogs in Russia at the start of the 20th century. Between 1920 and 1950 the breeding of pure toy terriers almost stopped and numbers fell to a critical level. Russian breeders only began reviving the breed in the mid-1950s. Almost all the dogs used had no pedigrees, and many were not purebred. Over time the breed went its own way, separate from the English Toy Terrier.
On October 12, 1958, two smooth-haired dogs produced a male puppy with striking fringes on its ears and legs, and it was decided to keep that feature. That is how the long-haired variety appeared; for a time it was called the Moscow Long-haired Toy Terrier. Today both varieties are recognized as one breed.
The FCI standard describes the Russian Toy as a small, elegant, long-legged dog with fine bone and lean muscle. The head is small and wedge-shaped, the ears are large, thin and upright, and the eyes are big and dark.
It's easy to mistake the smooth-haired variety for a Chihuahua. A pedigree from a registered breeder confirms the breed; be careful with listings where the breed isn't clear.
The Royal Kennel Club rates grooming as "every day"; for the long-haired variety that means a real daily brush, and for the smooth-haired a quick brush and a general check.
Our article on dog coat care walks through grooming step by step.
The Royal Kennel Club recommends up to an hour of exercise a day. You can split it into two or three short walks plus play. Even for a small dog, daily sniffing games, hide-and-seek at home or short training sessions tire the mind; see our article on sniffing games for ideas.
The Russian Toy doesn't need a special food; a complete and balanced dog food suited to its age and size is enough. Two things matter in very small dogs: meal routine and weight.
Some human foods are dangerous for dogs; check our list of foods dogs should never eat.
According to the Royal Kennel Club, the breed has no specific Breed Watch point of concern, and the recommended screening is an eye examination. Still, very small dogs share some common problems. The following is for information only; ask your veterinarian for diagnosis and treatment.
Science for Animal Welfare (UFAW) writes that fractures of the lower part of the forearm (radius and ulna) are more common in toy and miniature breeds than in larger dogs and can happen with only minor trauma. The most common cause is jumping or falling from a height or from someone's arms. These fractures can be slow to heal; according to UFAW, casts and splints often aren't enough and surgery is usually needed. We found no breed-specific figure for the Russian Toy, but at under 3 kg the same risk applies. The best prevention is avoiding falls.
In a 2021 UK study, 12.5% of dogs were diagnosed with periodontal (gum) disease within a year. Dogs with a smaller body weight had higher odds, and the risk fell as weight rose. One of the highest-risk breeds was the Toy Poodle; the Russian Toy falls into the same size group. Brushing and regular dental checks are the key steps; if you notice bad breath, red gums or reluctance to eat, show your vet.
Patellar luxation is a joint problem in which the kneecap slips out of place, which can cause limping or skipping on one back leg. In a 2016 study of English veterinary records it was found in 1.3% of dogs; the risk was much higher in toy breeds such as the Pomeranian, Chihuahua and Yorkshire Terrier, and dogs weighing less than the average for their breed and sex also had higher odds. We found no separate figure for the Russian Toy, but it's worth keeping in mind in dogs of similar size. If your dog skips or holds up a back leg while walking, show your vet.
Hypoglycemia means the blood sugar (glucose) has dropped too low. According to a 2018 review by Idowu and Heading, it is a relatively common problem in veterinary practice, ranging from subtle signs to a life-threatening emergency. FirstVet notes that puppies under three months old haven't fully developed the ability to regulate blood sugar and that toy and miniature breeds are especially susceptible; fasting, stomach and bowel upset, a drop in body temperature and intestinal parasites can trigger it. Signs include weakness, being very sleepy, a wobbly gait, trembling, seizures and loss of consciousness. If you see any of these, go to your vet or the nearest clinic right away. Regular meals and keeping the puppy warm are the preventive advice.
The Royal Kennel Club does not recognize any "teacup" breeds. It says such dogs are often bred from the runts of litters, may live shorter lives and can have breathing problems, fragile bones, joint, heart and stomach problems. The standard already sets the ideal size (22–27 cm, up to 3 kg); a breeder aiming below that is putting health second. Stay away from puppies sold as "mini" or "teacup".
The Royal Kennel Club says the breed is expected to live "over 12 years". We couldn't find a detailed life table for the Russian Toy. General data show that small, long-nosed dogs live longer than large or flat-faced ones: in the 2024 UK study by McMillan and colleagues, the median lifespan of small, long-nosed breeds was 13.3 years.
Regular vet checks, dental care, a healthy weight and protection from falls are the most concrete ways to help this dog live longer.
No, they are two separate breeds. A smooth-haired Russian Toy can look like a Chihuahua at first glance, but the Russian Toy has longer legs, a slimmer body and large, upright ears. The FCI and the Royal Kennel Club register them as separate breeds. See our Chihuahua page for details.
With care. Because it weighs up to 3 kg, rough play or a fall from someone's arms can cause serious injury. If you teach children to pet the dog on the floor and you supervise play, the risk drops.
Because it was bred as a watchdog, it may bark at unfamiliar sounds. Early socialization and rewarding calm behavior help; see our article on why dogs bark.
The smooth-haired variety and the tiny body get cold quickly. Dogs Trust notes that short-haired breeds may need a coat when it turns cold. Trembling and refusing to walk are signs your dog is cold.
They're the same breed with the same temperament. The difference is grooming: the long-haired variety needs its ear fringes and leg feathering brushed regularly, while the smooth-haired is easier to care for.
By Tüylüm · Last checked: November 10, 2026. Compiled from the sources above and written in our own words. Spotted a mistake? Write to [email protected] and we'll fix it right away. Photo from Wikimedia Commons, used under the license shown below it.