Whale

Ol' Blue is a neutral whale that swims within the lake in Evening Lake in Spyro: Year of the Dragon. If Spyro gets too close to it the first time, it will open it's mouth and suck Spyro inside. Inside the belly, Spyro will come to find a Dragon Egg with a baby Dragon called Jonah. If Spyro swims out through it's mouth, the Whale will barf him out. The whale will not swallow Spyro again after this. In the Spyro Reignited Trilogy, the whale is now wearing yellow swim shorts and would open and close it's mouth, even after Spyro recovered the Dragon Egg within it's belly. Unlike in the original game where inside the belly is the spine, the tongue and mouth, the reignited version has more detail such as crates, barnacles and even an underwater wall lamp, similar to the ones found outside.

Trivia

• The dragon you rescue in the whale is named Jonah. Jonah is a character in the Bible that was actually swallowed by a whale (or a giant fish, as the scripture says).
• By using the swim in the air glitch in Evening Lake, you can swim out the net to find not just the cage where Hunter is kept in the cutscenes, but also the whale's belly where if you enter, can never come out unless you quite or warp to another level.