He showed mercy on everyone and everything around him, including animals.
A greedy wolf knew of the man, and decided to deceive him for money and food.
The man had fell for the wolf's story and decided to give him everything the wolf needed, which was everything.
After realizing the wolf's scheme, he felt foolish. He prayed to Zeus to return his items and to punish them.
After hours of convincing, Zeus returned the items backed to the man and had removed the ability for animals to speak, as he feared they might've overthrown the gods. Ever since then animals remained silent for the rest of life.
After convincing for hours, Zeus decided to return the items and punish the animals in general after he feared that the animals would overthrow the Gods. He decided to remove the ability forr=