The first animal to be tamed was the wild ancestor of the dog.
First came the dog, followed by sheep and goats. Then the floodgates opened: pigs, cows, cats, horses and a menagerie of birds and other beasts made the leap.
The first animal to be tamed was the wild ancestor of the dog because the dog is smaller in size and could be easily kept. Also, it is an intelligent animal when it is compared with other animals like goat, sheep, and pig.