Eli5 why do pandas only eat bamboo when they are able to digest meat efficiently?

Question

Does it affect their life span? Is bamboo enough to satisfy their nutritional needs?

In: 2

Answer 1

It began as a simple adaptation to their environment; it’s easier to access bamboo, and it provides the protein they need.

Over time, their traits started changing; once able to *taste* meat, they no longer have the umami receptors (taste buds specialized to sense meaty, savory flavors). So, bamboo tastes good, and they have no interest in meat.