Growing up I was afraid of dogs (bitten/chased x 10) and my only pet was a stray cat I essentially tricked my parents into letting me keep. Later, when I retired from the military my wife brought home a Chihuahua puppy one Christmas and I have been a Chi fanatic ever since. Wonderful companion breed. But I still love cats and found it coincidental that one of the best dogs to have that gets along with cats is the Chihuahua. It has also been suggested that that The Chinese Crested and Chihuahua may be related, but that gets into Chihuahua origin theories which is one deep rabbit hole. Even modern DNA studies come back with completely opposite findings.
"Five Small Dog Breeds Likely to Get Along with Cats
Although any mixture of a cat and a dog breed has the potential to work out wonderfully or fail miserably, there are some small dog breeds that tend to get along better with felines. Here, your Burbank veterinarian discusses five of them.
Chihuahua
Chihuahuas generally make good companions for cats. In fact, many of them are actually smaller than most cats; you might have to stop the cat from chasing the dog, instead of the other way around. These dogs are confident and energetic—if your cat can accept that, the two may very well get along wonderfully.
Bichon Frise
The Bichon Frise is a gentle, playful, cute ball of fluff that tend to get along well with other pets, especially if introduced at a young age. When raised together at the same time, a Bichon and a cat will probably become best friends, even playing and romping together regularly. They’re great companions for humans and other pets!
Chinese Crested
The small Chinese Crested is a largely hairless dog that generally is about the same size as the average cat. They are playful and loving, but may be a bit timid—this is another case where the cat might be the aggressor. If you can get your feline to accept her, though, the Chinese Crested will make a great cat companion.
Boston Terrier
Named for city they were first bred in, the Boston Terrier is a fun, lively, intelligent dog. Their distinctive feature is that they’re usually very easy to train, making it a good choice for pairing with a cat.
Japanese Chin
The Japanese Chin was first bred as a companion animal. It is naturally affectionate and loving, and can get along well with kittens, adult cats, other dogs, or small children. If you’re looking for a small breed that’s likely to pair well with one of them, the Japanese Chin might be your answer."
Five Small Dog Breeds Likely to Get Along with Cats | Rainbow Veterinary Hospital.