There are several animals that are known for being great companions. Dogs are often considered one of the best companions due to their loyalty, affection, and social nature. Cats are also popular companions known for their independence and companionship. Other animals like rabbits, guinea pigs, and birds can also make wonderful companions depending on your preferences and lifestyle. Ultimately, the best companion animal for you will depend on your personal preferences, living situation, and the amount of time and care you can provide.