Where might a trait be needed in PHP?

Question

PHP

[I already read this question on toaster, but it didn't help me. So there is no need to delete and complain about the question for the existence of such a question. Thank you for your understanding.]
Hello!
I read about traits, but did not understand where it could be useful in practice. Okay, they save the amount of code, but where in practice it can come in handy. Make inheritance and all. That's economy and beauty. In what case would inheritance be preferable to traits?
Why can't the trait Cat be made a subclass of Animal and Tiger a subclass of Cat in this code? Everything is quite logical.
Thanks in advance to everyone who helps!

Answer 1

Where multiple inheritance may be needed.