Dinosaur eggs are eggs that are even larger than Sonic. They have a white shell with varying patterns on them, such as polka dots, stripes and stars. These patterns come in different colors, such as red, green, and yellow.
In Sonic and the Secret Rings, dinosaur eggs are scattered all across Dinosaur Jungle during Mission 10. For this mission, Sonic needs to find a dinosaur egg and take it to its corresponding nest, which is represented by a post sign that displays the same color and pattern as that of the egg. Sonic can place the dinosaur egg in the nest by walking through it or using the Homing Attack on it.