Board Thread:Questions and Answers/@comment-16190015-20140611020914/@comment-24956068-20140611093318

I have Level 7 BoW and I agree there's not much change in points when you start the game (compared when I have Level 1), but the pet will become more sensitive to boost at the end of the game, I started to get +5000 to +6000 when Wizard Cookie gets the blast jelly in later stages (but Level 1 BoW only gives +4000 to +4500).

So, I agree with your friend, do not upgrade that pet, unless you want to try some.

But, I don't know why combining your pet with Hero Cookie only gives +2 or +3. It might be bugs in the game you can report to the Support Center.