Child #4 will turn two years old next month. He does not yet talk, but he understands nearly everything you say.
He says a couple pseudo-words like “yuts” for look, and “buh-buhr” for the dog’s name, Baxter. He doesn’t really say momma or dada, or anything else for that matter.
But when he plays with the Farmer See-N-Say, he can sure make every one of those animal sounds. Go figure.