I'm currently cat-tonguing looking for a word to describe something or someone that sheds a lot of hair; my instincts went with dis-/ex-pilitive/-pilious, but those entries are null in the dictionary.
Examples:
- People with dander allergies usually can't keep ___ pets.
- My ___ roommate is constantly clogging one drain or the other.
My shedding or mo(u)lting roommate