Animals number are falling almost every day. Mostly by pollution or not having enough food.
The Food Chain
They're two separate animals, predators and prey. Predators need to prey on other animals for nutrients. Usually the prey eats plants but some can also be predators to some other animals.
Africa is one of the richest lands with animals. Sadly the animals they are dying by hunters or they don't have enough food. Like the lions right now there numbers have went under 30,000.
The Sea is a very valuable place but most of the animals in the Oceans are poisoned. Either by pollution or the animals have been eating poisoned foods or eating trash. Actually when fisherman catch fish/other food it's poisoned. Basically the whole world is poisoned.
Hope you enjoyed.