Here is my parasite: This is the first time I did that 'paint in photoshop' technique, I'm not really satisfied with how it is, but I got bored of it.
The snakespawn is a small reptile of about 8 cm head to tail that lives in grasslands or grassy areas in forests. The snakespawn is a parasite of ratsnakes. Glands in it skin shed an odour like that of mice, thus attracting ratsnakes looking for a prey. After the snake has swallowed the snakespawn, it lives in the stomach of the snake, feeding on the stomach's content of the snake. Though the snake will need to eat more prey (sharing it with it the snakespawn) it's health is not compromised by the presence of the parasite.
In the wild this reptile has lost the abilities of sight and hearing (so as to be more resistent to the snakes stomach fluids), however, in captivity snakespawns wich were hand-fed from birth did develop some eyesight.