There are upsides to breeding them. They need little water, have no odor, and hardly need to be cage changed. They can be fun if you set up a tank filled 3/4 of the way with aspen. I have a kangroo rat they are on the same lines as gerbils. Her tank is full of boxes, tubes, paper, and aspen. The way I see it. If you have to breed something do it the best, most fun, cheapest but best for the animals, and most interesting as you can. This is why I breed fancy mouse strains that aren't bred for litter size just coat color and to be good moms. People should try it if they only have a few small species that need small feed. I did breed them for feeders 10 years or so ago. They just never seemed happy in a cage like a rat or mouse does, that's why I stopped.
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Shannon in Reno
2.3 dogs
1.0 cat
Bunch O fancy rats and mice
50 something chickens
1.0 Black rat snake
2.0 Albino corn snakes
0.1 Chissel tooth kangaroo rat
0.1 Rosy Boa
0.1 Kenyan Sand Boa
1.0 Amazing Boyfriend