Bethany Hsia, co-founder of CodaPet. But sometimes, hair accumulates in the stomach and forms a hairball, which cats usually throw up in a tubular-shaped, saliva- and bile-soaked package.

The inevitable result of feline self-care, hairballs are nonetheless gross and Osito is notorious for hacking them up all over my bed at 3 in the morning. Grooming a long-haired cat daily with a ...