Quick question. I know a PC gets a stat boost every 4 levels but would a witches familiar also get the stat boost also when it advances the 4 HD as well? Thanks.
I could be wrong (am sure someone will be along shortly to say so, if I am) but Familiars don't get anything for their quasi-HD that the Familiar text doesn't say they get.
They don't get more skill points, feats, HP for con, or anything.
They get the skills their master gets, 1/2 of their masters HP, no feats or extras unless some ability says they get it.