Peeko is a pet that resembles a small brown cat. It has two legs, amber colored eyes, large ears, and a small mouth. You can obtain it from the beginning. Peeko evolves into Rack-rack at level 15.
Peekos cheerfully wiggle their ears when they are happy, which they almost always are!
Peeko's growth is charted in the graph below. It shows the number of hearts gained and spells learnt until it evolves at Level 15 into Rack-Rack.
In Prodigy, there is a world, Squeekore, that represents Peeko.