>>24998586Animals have been seen in the anime. They were more common in the original series as there weren't as many species of Pokémon introduced at the time. A picture book based on the Pokémon anime once featured a dog walking past Ash and his friends, and a piece of concept art of the residents of Pallet Town featured a cat. Birds can also occasionally be heard in the background. Foods that contain meat products, such as hamburgers and chicken, are often seen. In addition, the guidebook Pocket Monsters the Animation confirmed that there were indeed animals in the Pokémon world, and also revealed that Pokémon weren't related to animals at all.
In Pokémon: Adventures in the Orange Islands, the four gym badges are made up of seashells with a gem on the center of the shell. This implies that molluscs exist within the Pokémon world.
Ash holds up the badge he won from Cissy; the badge appears to be made of one half of a clam shell.
Animal appearances have become less frequent as more Pokémon have been added to take their places.
Ash Catches a Pokémon
Misty is scared when she sees a Caterpie, and Ash tries to calm her down by reminding her that it's a Bug-type Pokémon rather than a "real" bug.
Pidgeotto is seen eating a regular worm before being captured by Ash.
Ash in a cow costume
Challenge of the Samurai
As a pun on Caterpie, Ash is seen in a cow costume.
The Water Flowers of Cerulean City
Fish can be seen in the fish tanks inside the Gym. They have made later appearances featuring the Cerulean Gym.
Path to the Pokémon League
Misty mentions that A.J.'s ability to control Pokémon with a whip was similar to a lion tamer.
Here Comes the Squirtle Squad
After Ash, Misty, and Brock fall into the Squirtle Squad's pitfall trap, a dinosaur fossil can be seen.
Battle Aboard the St. Anne
A cooked lobster can be seen as food served on the ship.
Pokémon Shipwreck
More fish can be seen swimming in the ocean near the sunken St. Anne.
A fish biting Slowpoke's tail.
