Awkwardly worded question seeing as life evolves from generation to generation classifying something as an animal rather than an animal-like protist is rather difficult. Most scientists however, can...
Laika (from the Russian: Лайка, a breed of dog, literally meaning "Barker" or "Howler") was a Soviet space dog (c. 1954-November 3, 1957) who became the first living mammal to orbit the Earth...