Kookaburra expirience

[ToxicSS]

 I have done quest on Kookaburra's pet. I want to know why my pet recieve much more less expireince than I. For example, currently I am 35+ lvl, I have done quest on 25 lvl, but my pet has just 29 lvl....
Could someone helps me in this issue?

[Sardy]

Don't worry, your exp progress will slow down while kooka's not so much.

[yoker]

What he said. Kooka reaches 55lvl faster than your character if it's permanently summoned.