Now even the littlest builders can stack blocks and build towers! 4 special Peek-a-Blocks™ connect for easy stacking on top of the crocodile's bumpy building surface. Each time baby builds, she'll hear fun music and sounds. Then open his smiling mouth and feed him some blocks! Tail flips open so baby can re-discover those blocks, and store those and more inside. Build a whole collection! Look for other sets of Peek-a-Blocks Builders™ and watch the fun stack up! They're full of delightful themes and surprises, with easy-to-connect surfaces and bumpy bases that fit together too. Each sold separately and subject to availability.