Blogs are large aquatic beasts native to the Forest Moon of Endor.
They are vicious predators, and are known to attack land creatures. Their long, prehensile tails can be used to grab victims.
Blogs can use tree logs to build large dams in the rivers, resulting in a lake for them to live in.
- Ewoks, s02e08, "A Warrior and a Lurdo" (1986)