Animals are a diverse group of living organisms that share certain characteristics, such as being able to move, reproduce, and respond to their environment. They can be found in virtually every habitat on Earth and include a wide variety of species, from tiny insects to massive mammals. Some animals, such as dogs and cats, are kept as pets by humans.

Pets are animals that are kept by people for companionship or enjoyment. They are often kept in domestic settings and can include a wide range of species, including dogs, cats, birds, fish, reptiles, and small mammals. People usually form emotional bond with their pets, they provide love, entertainment, and often have positive impact on their physical and mental well-being.