Whats that thing munching on her breast?

Looks like a Khezu welp.

Careful. It bites.

NOM

its a gigi from mh3

where's the single pantleg tag on this?

"The khezu whelp is biting you!"

She's holding a torch, which is from MH3, and Giggis look exactly like that, so I'd assume that it's a Giggi that's biting her, not a Khezu Whelp.

afaik a Giigi IS a Khezu Whelp, isn't it...?
Also, er, you can add your own tags...

A Giggi is a Gigginox Whelp, and I'm sorry 'bout not adding the tags.