Kingdom of Knuffel

i havent logged in for a few years, and when i logged in, my first knuffel was levelled up! how can i tell who levelled her up?

The cup cake and apple give small amounts of exp over time it adds up!
I came back to quite of few of mine maxed too.

On the left side of your Knuffel's page, next to "Options" there is alink that says "View feeders / players". That's where you can see who interacted with your Knuffel, though, if I remember correctly, only for the past month.