I've discovered that lots of people like to do the same thing! I'm not sure how the animals feel about it though--a quick check on Flickr showed a mixture of puppy enthusiasm, annoyance, anger, and controlled tolerance. Here's a free book with icons to use with your kids.
The original book I created is on Tarheel Reader.
The picture on the right is my personal favorite.
For a fun time with your students, go here
to print out this free book.