This NPC can be found in Stormwind City (76), Terokkar Forest (43), Ashenvale (17), Feralas (17), Elwynn Forest (11), Nagrand (10), Crystalsong Forest (7), Duskwood (3), Blade's Edge Mountains and Howling Fjord.
Pet Battle: Ammen Vale, Ashenvale, Azshara, Blade's Edge Mountains, Crystalsong Forest, Darkshore, Dun Morogh, Duskwood, Dustwallow Marsh, Elwynn Forest, Feralas, Gilneas, Highmountain, Hillsbrad Foothills, Howling Fjord, Loch Modan, Magisters' Terrace, Moonglade, Mount Hyjal, Nagrand, Ruins of Gilneas, Sholazar Basin, Silverpine Forest, Spires of Arak, Stormwind City, Teldrassil, Terokkar Forest, Tol Barad Peninsula, Twilight Highlands, Val'sharah, Well of Eternity, Western Plaguelands, Westfall, Wetlands, Zul'Aman

Most people do not know the difference between a squirrel and a chipmunk. Most don't care.