Tashat loves to tease Dano and knows he is not allowed to take those, but if he sees an opportunity to tease Dano, he will go definitely for it. The slime he grabbed is a healing slime. It is sitting gently in his muzzle. When you catch him, he will always release whatever he is holding to not damage it.

It is fanart to anime called "By the Grace of the Gods". Most of these slimes are evolved from Regular Slimes by repeating same task/feeding them various things.
The whole list of the slimes in the picture:
-Regular Slime (it started here, weakest monster)
-Cleaner Slime (it loves to eat filth, not garbage)
-Acid Slime(it manages to eat more difficult foods, like bones)
-Poison Slime(eats a lot of poisonous herbs, many die in the process)
-Scavenger Slime(brown one, eats trash and converts to fertilizer, reproduces faster)
-Sticky Slime(produces and spits sticky fluid)
-Healing Slime(in Tashat's mouth, used to healing humans, extremally weak compared to other slimes)
-Bloody Slime(a fluid, evolved by absorbing a lot of blood)
-Metal Slime(eats a lot of different metalls, very heavy, afraid of Acid Slime)
-Iron Slime(eats a lot of iron, heavy, resistant to rust)

Made by my wife  InvisibleCatDragon