In the video, Jonas has just woken up from his afternoon nap and has decided to read a book. Jonas is getting quite a vocabulary, at least of the animal noise variety. "Fish" and "bunny" are both actions the animals do, "kitty" is the noise he makes when HE sees a kitty (a scream--which he doesn't do in the video), and "doggie" is just the word "doggie", I suppose because our dogs don't make noises. One of his other favorite words and objects is "truck", which sounds like "kkkkkkk"; sort of like he's about to hack something up. Every time he turns the page in his truck book or sees a car go by he says, "kkkkkk".