well cat-people are an often lamented idea in dungeons and dragons circles...a lot of players of the pen and paper game find them laughable for some reason i can't comprehend. the closest thing i can think of to cat people in forgotten realms are rakshasas, but they are a nastily powerful monster race of evil, decadent fiends.

as for dog people, the closest thing i can think of there are the hound archons, which are celestial beings (basically angels) that have humanoid shape but the heads of dogs.

half vampires are all but unheard of as far as i've heard, though there are ways to work around that, the vampire spawn is comparitively weak to a true vampire, but then they are enthralled to their master and have their alignments changed to CE upon creation as well as far as i know. if you could find a plausible story-driven way to make a weaker vampire race, it could be done but once again it doesn't seem to jive with the source material (D&D core rules and forgotten realms lore)

EDIT that druid alignment thing messes with me...i used to be a DM so i should know! dangit too much info in D&D!!!