I have another addition to this thread.

A few days ago the landscaper came to trim the ginormous apple tree we have in our yard. Many of the apples fell as he was doing this.

One of mine is now obsessed with picking up the apples and carrying them inside. She's very picky too - she'll sniff and pick up a few, toss them away, until she finds THE ONE, and then she hightails it back in so she can eat her "prize".

That tree has been dropping apples the entire two years she's been here. And she hasn't ever shown any interest in them until now.

Here she is trying to bring in her beloved apple:


And her starting to nibble at the skin (before I took away her prize!):