Are Siamese snowshoe cat are mammals or not?

Siamese snowshoe cats are indeed mammals. Mammals are a diverse group of vertebrate animals that are characterized by several key features, including having mammary glands for nursing their young, possessing hair or fur, and being warm-blooded. Siamese snowshoe cats fall under the taxonomic order Carnivora, which also includes other cat species, as well as dogs, bears, seals, and more.