One of our kitties brings my wife flowers from a flowering tree. No reason other than praise as far as we can tell. He will howl to let her know it is there for the asking. He will munch on it if not accepted.
I thought our Merlin was the only kitty in the world that brought my wife flowers. He somehow gets roses from our rose garden and drops them in the living room. Sometimes he plays She Loves Me, She Loves Me Not and leaves behind a pile of rose petals.
Me? I usually get the live lizard in the house to pick up.
Custom thoughtful gifts for both of us.