hunters and pets.Follow

I was wondering , how much the difference in defense would be for a pet that is classified as low defense vs one that's high defense at higher levels. 30 , 40 , 50 and eventually 60. This is because I'm wondering if it would be wise to get 2 pets. 1 for dmg , and 1 for tanking. But if the difference in defense isn't all that much , I wouldn't really bother with this idea.

I was planning on using a cat type for dmg (durotar tiger comes in mind) , and a bear type for tanking. Both species eat meat and fish , that's why I choose them. The bear eats just about everything for that matter. :D