Quote Originally Posted by JellyFish72 View Post
Why are other non-mammals like birds (who are often also considered instinct-driven, though more trainable) considered to benefit from toys, but not reptiles?
Because birds are among some of the most intelligent land animal (some bird species more than others).

I don't know about this. If we look at their behaviour in the wild, I think this says it all. They spend the majority of their lives in a burrow - not seeking enrichment. Perhaps when we take them out of their natural habitats (even if they're captive bred - instinct is instinct) they tend to stray around their tanks more. I don't know, but you cannot compare birds to snakes in terms of intelligence.