Dangerous as a bear for example (5)
I believe the answer is:
hairy
'dangerous' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for hairy that I've seen before include "Hirsute - dangerous" , "With locks" , "Like many dogs" , "fraught with danger" , "like Esau" .)