Simple RAW for Pathfinder Thread V: Golarion Strikes Back

[Draconi Redfir]

Q375: Silly question but just in case.

Making my first character with a familiar, it has four hit die while the base creature has one. Are the saves and other things not altered by being a families still the same as the one hit-die version of the creature, or do they go up with the additional hit die?

edit: Saves are modified by being familiar. herp.

Edit:

Q376 The two-headed feat says "Special attacks that are based on the head" For the "Two heads are better" segment. Does that include Poison from a bite? Or no?