Cats

Long-haired Scottish Folds are not hypoallergenic, shed all year and need regular brushing. See what registries and charities say on grooming and joint health.

Five cat calming products with the maker's own claims, and what studies of cat pheromones measured, in how many cats, and found.

Flea collars are not all alike. Here is what the common ingredients do, what EPA, FDA, and vet sources warn about, and when to call a vet or poison line.