A totally random post just because I found this today. Be happy I didn't tell you about the owl pellet under the tree in my yard.
If you're a 4-Her or home schooler and you're into dogs, the AKC has some fun pencil paper activities and check the sidebar.
Cornell Cooperative Extension offers a book ($20) that may be focused on activities for older kids, not sure. PAWSitively Youth: A Guidebook about Dogs for Community Outreach Leaders