you can farm thousands of these in the bug cave in the island with a megatherium
If you kill big corrupted dinos like T Rexes or Spinos they give you leech blood for some reason.
Use this when fishing for great drops!
If you want to attack a leech first get a araneo with a saddle ride the araneo so it doesn’t stick on you
Using a wooden club will give you so much more! Saves a ton of time
If your looking to farm leech blood, go to the center island at the center map and around the border is all swamp, so take your megatherium and go ham👍
Infected leech gives more blood then normal one.
Get on your Quetz, swim the swamp and eat the swamp. Go home with Leech Blood.
They are hella OP and this will help u get hella meat