Well, Playing ark mobile you can get leech blood in swarmp area. just go there and go all out, just run in the swamp like a mad man with you op tame you kill leech and get the leech blood in tame inventory, dont try to search this leech cause it really hard to spot them.. Just make sure that tame can survive any threat in the swamp in case you got disconnected in the game.. dont know why I also get Angler in the swamp while running like a mad man in there.

Kill leeches with a tongue moschops pumped into leech blood harvesting, and you've got leech blood for days!!

I don’t know the chances but on mobile you can rarely get leech blood in free gift boxes.

Use this when fishing for great drops!

On mobile leeches are one of the rarest creatures in game in fact of 3 years of playing this game I only had 2 encounters with them and I go into the swamp very often.

If you want to attack a leech first get a araneo with a saddle ride the araneo so it doesn’t stick on you

If you kill big corrupted dinos like T Rexes or Spinos they give you leech blood for some reason.

you can farm thousands of these in the bug cave in the island with a megatherium

Using a wooden club will give you so much more! Saves a ton of time

Death worms are also able to drop blood