Space Matters: Most commercially sold rodent cages are far too small. Rats need 2+ cubic feet per rat; Syrian hamsters need 450+ sq in of floor space. Bar spacing is critical — most need 0.5" or less to prevent escapes or injuries.
Rodent Setup Calculator
Proper cage sizing, enrichment, wheels, hideouts, and substrate for hamsters, rats, mice, gerbils, guinea pigs, chinchillas, and more.