Mage XP question!

[Trihaal]

I've searched all over but have not found an answer to this question yet...

I understand that if your pet does over 50% of the damage, you only get 50% XP for the kill...

...but I also heard somewhere that if you don't at least do 1% of damage, you don't get any XP? Is this true?

For example, My water pet was able to handle kobolds in Steamfont just fine. For the times I didn't attack at all, just sending him in, was I not getting any experience? Thank you in advance!