The Emerald Dream is full of little secrets, including a battle pet that is hidden unless you know the trick to finding it! The Pale Slumbertooth can only be found when using a toy from Dreamsurges!
Most of the pets from the Emerald Dream Safari achievement are simple enough to find. The exceptions are the Snaggletoof Battle Pets, who are simply rare, and also the Pale Slumbertooth, who are impossible to find unless you know the trick!
To find this Battle Pet, you will first need the Friendsurge Defenders toy. This toy can be bought from Dreamsurge vendors for 500 Dreamsurge Coalescence. Once you have it, using it in the Emerald Dream will allow you to see any Pale Slumbertooth that spawns.
Note that not every slumbertooth will be a Battle Pet, so you may need to look around before you can find one to tame. They can be found all over the Emerald Dream, usually sleeping under bushes — The following are all TomTom commands for spawn locations:
/way #2200 34.2 55.4 Pale Slumbertooth
/way #2200 34.4 62.2 Pale Slumbertooth
/way #2200 34.4 67.4 Pale Slumbertooth
/way #2200 34.4 67.6 Pale Slumbertooth
/way #2200 34.6 62.4 Pale Slumbertooth
/way #2200 35.4 53.0 Pale Slumbertooth
/way #2200 35.6 57.8 Pale Slumbertooth
/way #2200 35.6 62.2 Pale Slumbertooth
/way #2200 46.4 47.2 Pale Slumbertooth
/way #2200 46.6 38.8 Pale Slumbertooth
/way #2200 46.6 47.2 Pale Slumbertooth
/way #2200 46.8 48.2 Pale Slumbertooth
/way #2200 48.4 69.4 Pale Slumbertooth
/way #2200 51.0 68.2 Pale Slumbertooth
/way #2200 51.2 66.6 Pale Slumbertooth
/way #2200 51.4 66.4 Pale Slumbertooth
/way #2200 53.4 65.2 Pale Slumbertooth
/way #2200 53.6 65.2 Pale Slumbertooth
/way #2200 58.4 35.2 Pale Slumbertooth
/way #2200 58.6 35.0 Pale