Yaks have very long fur, and during the winter, they also grow a short, thick fur undercoat which insulates them from the cold.
(Yaks; have; very long fur) (they; also grow; a short, thick fur undercoat which insulates them from the cold; T:during the winter) (a short, thick fur undercoat; insulates; them; from the cold)
Yaks they a short, thick fur undercoat
have also grow insulates
very long fur
a short, thick fur undercoat which insulates them from the cold T:during the winter
them from the cold