A Bath Without Water
Chinchillas have one of the densest coats of any land mammal. Up to 80 hairs grow from a single follicle — think of a single pore on your arm sprouting an entire paintbrush’s worth of fur. That density is gorgeous but it’s also a liability. Get a chinchilla wet and the fur traps moisture deep against the skin, where it breeds fungi and painful matting.

So chinchillas skip the water entirely. They roll in fine volcanic ash or pumice dust, which pulls excess oils and debris from the coat without leaving moisture behind. In the wild, they bathe whenever the mood strikes. Pet owners are advised to offer two to four sessions a week, three to five minutes each. Watch one do it and you’ll understand why: the rolling, shaking, and sheer satisfaction of the whole ritual is genuinely entertaining.
The President Who Kept 30 Guinea Pigs
Theodore Roosevelt’s White House was, famously, a zoo. Among the snakes, dogs, and pet bear, the Roosevelt family also maintained a substantial guinea pig operation. At the family’s peak, they cared for 22 animals at once. Documents from the Theodore Roosevelt Center account for at least 30 individual guinea pigs over the years.

A handful got names that tell you everything about the Roosevelt family’s sense of humor: Admiral Dewey, Dr. Johnson, Bishop Doane, Fighting Bob Evans, Father O’Grady. There was also one called The Prodigal Son, plus a trio with academic flavor: Harvard, Princeton, and Mr. and Mrs. Longworth. Whatever your politics, you have to respect the commitment.