moult
(US molt), / məult; molt/ v [I]
(a) (of birds) lose feathers before a new growth （指鸟类）换羽.
(b) (of dogs, cats, etc) lose hair （指狗、 猫等）脱毛
a dog that moults all over the house 那条狗, 脱的毛满屋都是. moult n [C, U]
process or time of moulting 换羽; 脱毛; 换羽期; 脱毛期.