Uh.. you do realize, you could extremely easily edit a dog player-type add-on, to have a different sound.
There's an AI dog mod on the RTB archive. I edited to work with the current versions as a playertype in an extremely stuffty fashion and I'm afraid to release it.
you can also be a dog with Fooly fun CMDS
why are u afraid
Because it's such a terrible edit that I just made it so it didn't show up on vehicle spawns.Someone else with more coding experience should attempt this and make it compatible with the bot hole as an NPC.I'll still give you this half-assed edit if you PM me.