Complex sentence: The dog is believed to be the first animal domesticated, most likely arising from the grey wolf, with fossil evidence dating to about 12 000 BC. The other carnivores domesticated in pre historic times were the cat and polecat.
Split into simpler sentences: The dog is believed to be the first animal domesticated, most likely arising from the grey wolf. The first fossil evidence dates domestication to about 12 000 BC. The other carnivores domesticated in pre historic times were the cat and polecat.