A flea was a species of ectoparasite, of which there were 2500 plus known species in the world. An adult flea was generally 3 mm in size and they fed on blood. With a slap, the Zoog clapped heavily on his stomach, he swatted a flea, which attempted to pierce its sharp mouth under his skin, to death. But soon another took the dead flea's place. The Zoog's paws kept swatting at them. At the same time, he screamed, "Help! Help! Have mercy, I am just passing!"
The walls and ceiling were closing in. They were now less than 1 metre away, squeezing the team in the middle. Endless worms and parasites swallowed them up like a swamp of disgusting and sticky waters.