Being hirsute can be dangerous (5)
I believe the answer is:
hairy
This clue is a double definition.
'being hirsute' is the first definition.
('hairy' can be a synonym of 'hirsute')
'be dangerous' is the second definition.
(I've seen this before)
'can' acts as a link.
(Other definitions for hairy that I've seen before include "Frightening - like a bear?" , "Scary" , "Perilous" , "Armpits can be" , "Like many dogs" .)