Wild animals can drink the stagnant water of the ponds, eating food that is certainly not cooked and far from sterilized because they have antibodies (molecules of the immune system) that make them more resistant. For example, vultures produce enzymes that make them capable of digesting putrescine and cadaverine, two very toxic substances that form in rotting flesh. It is no coincidence that pets, dogs and cats, which live in a less natural and more protected environment, are weaker and must be fed with appropriate, almost "human" foods. And even man has, albeit to a limited extent, one of these characteristics: from his ancestors, who often ate old fruit and therefore already in fermentation, he inherited the ability to ingest moderate amounts of alcohol without damage. However, even if we cannot easily ascertain this, very often because of eating those foods, wild animals are afflicted by parasites and diseases, because of which they can also die. An example is toxoplasmosis, which both humans and other animals can contract by eating raw meat.