Yup yup, 'that' hydra again. This time swallowing a meal a tad larger than what we usually see it eating - a dragon! Hah, so while the identities of the other bulges aren't known, the dragon that's shown is one of my characters, who is known for being highly unwilling in vore-situations.
Rezca - the dragon in that picture - just can't appreciate what a lovely bulge he's making in that hydra's neck ^^