Fish are low-care pets that can be left alone for brief periods of time. Modern aquarium systems with automatic feeding make maintenance easier.
If given enough food, drink, and a clean litter box, cats are more independent than dogs and can be left alone longer. Some cats travel well.
Small rodents are easy to care for and can travel alone. Provide ample food, water, and a clean cage.
Some reptiles are low-maintenance and can be left alone. Make sure they have heat, light, and water. Snakes are particularly easygoing.
With toys and care, small birds may be social but independent. Low-maintenance birds include budgies and canaries.
Guinea pigs are gregarious yet can be single for short durations. Give them ample hay, vegetables, and a tidy home.
Litter-trained rabbits can be left alone briefly. They need social interaction, so a pair may help.
Consider pets that pet sitters or boarding facilities can easily care for while you're away. This includes dogs, cats, and exotic pets if professional care is available.