les chiens ne font pas des chats
“Les chiens ne font pas des chats” means that kids resemble their parents, that one inherits the behaviour and the tastes of one’s parents, along with their character traits. Literally, it means “dogs don’t make cats,” meaning that dogs give birth to puppies, not kittens. Equivalent expressions in English would be “he’s a chip off the old block” or “the apple doesn’t fall far from the tree.”