Is there a way to make an Animal companion into a Familiar as Well?

[Thatwarforged]

So I was making a gestalt character and I was wondering if there was a way in Pathfinder (No 3.5) to make my animal companion, a familiar as well?

[Psyren]

Beast-Bonded Witch can kinda do this. The Twin Soul ability lets your dead familiar transfer into your body until you find a new one for it to inhabit. So you kill your familliar, take Animal Ally to get a companion, then stick your familiar's mind in the AC's body, keeping all its physical stats and feats (the automatic ones, like Toughness or Improved Grapple - it can't use any activated ones, like Power Attack.)