How Could They?

Today we went down to a local garden to take some photos for the latest course.  On the way in, we noticed a cage that had sawdust on the bottom, looking like it belonged to a bunny.  It was sitting beside a garbage can and the lid was off.  We expressed our distress and kept our eye out for the bunny as we walked through the park.  On our way out, we saw a bunny sitting across the parking lot, walked over and discovered, this was no wild bunny.  Someone had left the bunny there, probably thinking it would survive in this nice garden with lots of plants to eat.  How could they?  With the help of some other people, we quickly caught the bunny and put him in his cage.  We called the local Humane Society who came to pick him up a short while later.  I didn't take his picture but he was a cute little guy, very comfortable in his cage and with people, including kids, and I don't know how someone could do that to a defenceless animal.  If we hadn't decided to go to this garden today, would anyone else have seen him?  How long before he was eaten by a coyote or a fox or run over by a car?  I just hope he was micro chipped so they can slap a fine on whoever left him to die.