No. Evolutionists define cats as animals that all have an appearance and nature similar to a cat. The assumption is that they all evolved from a common ancestor. The assumption on top of that assumption is that the common ancestor lived in the oligocene era. The assumption on top of that assumption is that the oligocene era was 25 million years ago. Cats are not defined by some vague idea about what happened a bazillion years ago. They are defined based on what they are right now, even if you're an evolutionist. The definition of a cat does not rest atop a house of cards full of assumptions, as though the existence of a "cat" were somehow the proof that the end conclusion is correct, justifying the reasoning that led up to it, because the definition of a cat is what started the line of reasoning. It cannot be both the beginning and the end of the proof. That's circular reasoning.
Otherwise, I could start with the observation of the existence of a rat, build an Aesop's fable based on that notion and conclude that the fable proves the existence of a rat. Therefore, because we see a rat, it proves Aesop's fable, which was built on the original observation that a rat exists.