The leather drop rates in Hews Bane is TERRIBLE.
One Haj Mojo should drop a ton of leather scraps with it's size. It drops 0.
Lions drop 1 scrap or drop nothing.
I can kill 10 mudrabs and get nothing; usually killing one provides one scrap.
I can kill 10 Heron and get more leather from them than the actual lions, crocodiles, and skeevers. And they are level 1 and have no effort to kill.
Compared to gathering weeds (like jute and ironhide) and getting ore, we're barely getting anything for leatherworking.