Fish: Low-maintenance and often requiring only regular feeding, fish are an ideal option for those who travel frequently.
Cats: Independent by nature, cats can handle short periods alone with proper food, water, and a clean litter box. Some cats are content to be alone for longer periods compared to others.
Small Rodents (Hamsters, Gerbils, Mice): Small rodents are relatively low-maintenance and can be left alone for short durations with enough food, water, and a clean cage.
Reptiles (Geckos, Snakes, Turtles): Certain reptiles can be good options, as they don't require as much attention as mammals. However, their specific needs must be met.
Birds (Budgies, Canaries): Smaller birds like budgies and canaries can be left alone for short periods, but they do require daily care.
Guinea Pigs: Social and relatively low-maintenance, guinea pigs can be left alone for a day or two with enough food and water.
Insects (Ants, Crickets): For something unique, consider keeping an insect colony like ants. They require minimal care and can be fascinating to observe.
Hermit Crabs: Hermit crabs are low-maintenance pets that don't need constant attention and can be left alone for short trips.