The funny thing having a bunny was no nose prints! Her nose was fuzzy and pressing to the glass would mean bending a zillion whiskers anyway ... but in the summertime, we had to keep the glass down on the bottom half of the kitchen door, as she figured out she could tear a hole big enough to get through in the screen, even though we didn't think she would as it was a metal screen! Thankfully it made a very loud popping noise as it tore, and gave her away, so she didn't get outside unsupervised!