Board Thread:General Discussion/@comment-26539661-20160508033949/@comment-26131865-20160508081704

BattleCatsAddict wrote: Wtf lol you can level them up only with Catseyes

yes? Nope. Use one catseye unlocks the following level cap, but you still need XP to upgrade.

In the same fashion, you also need XP to evolve a Cat using Catfruit.