Each one of these beasts will have a buff called Strong Will when you first come upon them. The tooltip for this buff reads "Cannot be tamed until weakened". In order to weaken them to the point where they can be tamed you will need to dps them down to about 20% health. The thing is however, these pretties will two shot anyone that gets in their melee range. This is where your going to want to know a little more about what makes each of these beasts tick.
Degu, the red spectral porcupine, has an ability called Barbed Needle that will two-shot people with poison who attack her from too far a range. The spell tooltip reads a 15-50 yard range, so the goal with her is to try to always stay within 15 yards. It's also crucial not to let her get too close because she can also two-shot you with her melee hits. This particular tame requires keeping her at that "perfect" distance while dpsing her down until her Strong Will buff wears off.
Concussive Shot will be the most important tool in your box for this tame. Use it whenever it's off cooldown. Ice Trap will also come in very handy in slowing her down. I used Ice Trap and Snake Trap whenever they were up, and they certainly helped. Disengage can also be a lifesaver if you notice she is just about in melee range, but if you do use it make sure you run back toward her immediately! If you simply disengage and stay where you are you could end up getting hit by Barbed Needle. Moving forward toward her will get her to stop her Barbed Needle cast once you get within 15 yards. (Do note that Scatter Shot is completely ineffective against her.)
|Degu patrolling along the canyon wall in Krasarang Wilds|
I marked a red line on the map below to indicate where she can be found patrolling. ~
Here is a video below of a not-so-smooth tame where you can see me getting hit by Barbed Needle a couple of times (I used Exhilaration and then a health pot to regain my health after each hit). I even fracked up the actual tame as well by moving, causing Deterrence to end before tame beast could finish. Luckily tame beast finished before I got eaten for breakfast.