Pets such as dogs, cats, rabbits, and fish are known to be good for reducing anxiety and providing companionship. Dogs, in particular, are often recommended as they can provide emotional support and encourage physical activity through walks and playtime. Cats are also known for their calming presence and can help reduce stress levels. Fish tanks can have a soothing effect on people and watching the fish swim can be relaxing. Ultimately, the best pet for anxiety will depend on individual preferences and lifestyle.