What enclosure is best for gerbils?

The best enclosure for gerbils will provide plenty of space for running and climbing, adequate ventilation and an escape-proof design. Glass aquariums are very popular and contain mess (and gerbils!) well, but a wire cage with a deep solid bottom can work well, too. Make sure any wire cage you choose has the bars spaced half an inch apart or less. Tube cages or other enclosures made of plastic can work, but they need to be adequately vented and you may find that your gerbils will chew through them.

How big should a gerbil enclosure be?

A gerbil enclosure should be big enough that each gerbil has at least 450 square inches of floor space, or five gallons if it's a glass enclosure. A pair would require 900 square inches of space or a ten gallon aquarium at a minimum, and bigger is always better. Be sure to provide climbing opportunities and extra vertical space for your gerbils, if you can.

How many gerbils can you keep together?

You can keep two or more gerbils together, as gerbils are social animals and are happiest when they are not alone. They do best in same-sex pairs or small groups. Ideally, you'll want to raise pairs or groups together to prevent stress and friction from introducing new gerbils, but a gradual introduction process can help if you must add a new member to your gerbil habitat. Furthermore, unless you have a very large habitat for your gerbils, keeping more than four gerbils is not recommended.