Answer:
The relationship between animals and humans are quite ancient. Here, first we should differentiate between wild and pet/domesticated animals.
Explanation:
From the evolution of species and the arrival of Homo sapiens, animals have come closer to them. Their relationship was not always consumer and consummate but in certain cases more than it.
Domesticated animals like cow, dog/cat, horse and many others have a close relationship with humans. The services they offered were in many cases, irreversible. Some of them offered life saving nutrition and security.