"Because they're looking to pets to fill a human-type void, they are humanizing the pets, " he says.
“正因为他们饲养宠物以填补生活空白,因此就赋予了宠物更多的人性,”他说。
2
So your dog's grin may not be a real human-type smile. But it now seems likely that deep in brain regions that animals share with humans, the ability for joy and ancients forms of laughter do exist.