First of all, you should know that you can't eat carnivores such as tigers, eagles, kittens and dolphins, because these animals are at the top of the food chain and have a lot of toxins. In addition, there are mammals omnivores, such as pigs and dogs, and there are many of these toxins. As for chicken, it is also omnivorous, but it belongs to low-level birds, with less toxins and can be eaten. It's best not to eat fish that eat meat. Other fish can eat, whales can't eat, because whales are not fish, at the top of the food chain, they can live for decades and have a lot of toxins.