<p>Hamsters are not social animals; if you want hamsters, one is the right number to have in a cage or habitat.</p>
<p>I’ll cast another vote for gerbils, which are social animals; no fewer than two to a cage, and four is even more fun. Odd numbers can work, but sometimes, one gerbil will end up the “odd man out,” so I like even numbers better.</p>
<p>Gerbils produce very little urine; their cages stay cleaner longer than a hamster’s will. If you have multiple cages connected with tubes, you don’t have to clean everything as often as you would if you had only one cage. Gerbils often will prefer one spot for toileting (though will use others), and a different spot for a food cache. </p>
<p>Gerbils are diurnal, so are excellent for kids, who are, after all, usually at school during the day. When S got his first two gerbils, we used to sit on his bed watching “The Sam and Leon Show,” as we called it. They are very interesting little beasties!</p>
<p>We eventually got up to… eight cages, I think it was. We never had all eight connected at one time, wanting to keep at least one cage for other use (isolating a gerbil if needed, having a holding pen for cage-cleaning time, etc.). When we cleaned cages, we’d re-engineer the habitat to change the configuration; we had multiple levels, lofts, lookout towers, toys… all kinds of things to add, move around, change, and lots and lots and lots of tubes to connect the cages with. Lots of tubes.</p>
<p>Gerbils are intensely curious and often, fearless. It mattered not to the gerbs if the (three-legged) cat was draped over a cage; they’d go about their cleaning, eating, drinking, shredding anyway. When the cat stuck his nose to the cage bars to sniff, a gerbil would sniff him right back. (I kept telling the gerbils to bite the cat in the nose, but would they listen to me? Noooo!)</p>
<p>Having gerbils means never having to ask what to do with cardboard toilet paper tubes.</p>