This is (the Blizzcon Demo that started at level 15!) a quick how to feed your hunter pet in classic WoW Demo (the demo was missing the hunter pet quest), if anyone is interested and already has the “Feed Pet” spell. Use the ability “Feed Pet”, then open your bags and click on a food item that is desired by said pet (fruit, meat, etc.).
It took me a second to figure it out myself, and yes, my boar is a cannibal. 😛
Thanks for watching!