history: I came home one day to find that my dog had eaten a sandwich I had taken home from lunch.  The odd thing is that it had been in a bookbag, and he had unzipped the bag to get to it.
current: I came home one day and found that my dog had unzipped my bookbag, gotten a sandwich I had forgotten I brought home from lunch, and opened the bag it was in without damaging it to eat it.
next: That sounds peculiar. I've never known a dog with such finesse, yours may have talent.