P is for… Peteliae

Aelian describes the Peteliae as tiny, pale crabs that form in mud. They have small wings that are incapable of flight, instead generating only enough lift to speed them up a bit. Eating them is good for sciatica.
O is for… Opimachus

The chargol insect of Leviticus begat the ophiomachus (“snake fighter”) of the Septuagint, by way of Aristotle’s account of snake-eating locusts. This in turn begat the opimachus of the Ortus Sanitatis, which merges it with the snake-fighting secretary bird. Did it beget the word “opinicus” as well?
J is for… Jarjacha

The Jarjacha is a long-necked, four-legged nocturnal animal with glowing eyes. It only eats incestuous people. Its mocking call – jar-jar-jar-jar-jar – echoing in the mountains of Peru is a sign that someone in the village has been Up To No Good, and the guilty parties are duly sought out and punished.
H is for… Haüt

The Haüt is a grotesque South American monster described by Thevet. It is the size of a large African monkey, with a childlike face. Its paws have long claws shaped like fishbones and its fur never looks wet. Despite its ugliness it is harmless and frequently emits deep sighs like a man in pain. As it refuses all food given to it in captivity, it is believed that the haüt, like the bird of paradise, lives on nothing but air.