API GetPetExperience

Returns the pet's current XP total, and the XP total required for the next level. currXP, nextXP = GetPetExperience;

Returns

 * currXP : Number - The current XP total
 * nextXP : Number - The XP total required for the next level

Example
local currXP, nextXP = GetPetExperience; DEFAULT_CHAT_FRAME("Pet experience: " .. currXP .. " / " .. nextXP);

Result
Pet experience is displayed in the default chat frame.