Hello friend @soyariadnna, You have mentioned before us some animals that have disappeared from your country Venezuela. The main cause of animal extinction is man-made and climate change. I think the rate at which humans are polluting the environment and deforesting is the main cause of destroying a country's biodiversity. Extinct animals from your country are leopards, some species of crocodiles, turtles and other species of birds that protect our environment. I hope these animals will soon breed again in your country. Best wishes to you.