You can have a max of 4 leeches latched onto you, if another leech tries to latch onto you then it will just do melee attacks until you die. Having 4 leeches on your body will also make your health drain at 2 hp per second.

Pretty unknown fact: Diseased leeches will spawn with higher health than a normal leech, and move faster than a normal leech. Also yes they do drop way more leech blood than a normal leech.

FOR MOBILE PLAYERS ONLY:

These can be found in swamp dungeons, one will spawn in the water at fountains at a high level, and you will be guaranteed to find them for every fountain that exists in that dungeon. If one latches onto you they can be removed by stepping into a poison gas vent, same thing applies to diseased leeches too as they also have a chance to spawn there.

FOR MOBILE PLAYERS ONLY:

To get a leech off of you, you need to create a fire and jump on the fire for a few seconds until the leech dies

On the island there’s many outbreaks of “swamp fever”. You get Swamp fever by getting a infected leech stuck on you and TRANSFERRING NO longer Gets RID of SWAMP FEVER.

Hope after you read this you don't end up with a beloved tame lost

If you are going through the swamp with a tame, stop once and a while to get on land and check for leeches on your tame. Go into creature settings and if you see 'remove leech' click it. Keep checking until the botton doesn't show up, as a single tame can have multiple leechs.

(Not related to leechs but I once saw like, 6 Rynionothas flying around absolutely DELETEING every creature in sight. Me, my parasaur, and my three raptors barely made it out with our lives.)

If you have a leech, campfires will burn it off. I THINK that fire might get leechs off tames too, but the first leech method I mentioned is waaaayyyyyyy less risky (Rip 5 dilos)

I hope this reaches you well, and have a wonderful day!

-Someone who is being chased by 6 Rynionothas

No latch onto Beelzebufos

FOR MOBILE PLAYERS ONLY:

These are in the swamp, they’re just super rare and you rarely will find them. They must be removed via campfire or cooking pot, same thing applies to dinos that aren’t native to the swamp.

FOR MOBILE PLAYERS ONLY:

I read on the ark wiki that they dont latch onto tames native to the swamp