Neutering is a way of preventing animals, usually male pets like dogs and cats, from having babies. It's kind of like a special operation that takes away the parts of the body that are used to make babies.
This means that they won't be able to get a girl animal pregnant, and they won't have babies of their own.
Neutering is usually done by a veterinarian. They give the animal special medicine to make them sleep, so they don't feel any pain. Then, they make a small cut in the animal's belly, and take out the parts that make babies.
After the neutering operation, the animal may be a little tired or sore, but they will feel better in a few days. Neutering is important because it can help prevent overpopulation of animals, and it can make your pet healthier and happier.