Ligers are a cross between lions and tigers. They exist only in zoos because lions and tigers do not live together in the wild.Which is a reason why lions and tigers are considered separate species?

A common way to distinguish species is whether they can produce fertile offspring together. Lions and tigers can produce ligers, but ligers are generally infertile and cannot reproduce. Therefore, “Ligers cannot reproduce” is the reason they are considered separate species; the fact that they look different or meet only in zoos does not establish this criterion.

AI-written and checked against the verified answer.