Coyote Roller - DIY. It keeps dogs from scaling or climbing chain link (or any other) fence.
Roller bars, also called coyote rollers, on top of an x-pen.
Kitty Klips - The Cat Containment System - Details
Kitty Klips - The Cat Containment System - Details -maybe this will work better
Welcome to Katzecure. We provide secure cat fencing to help keep cats safe in their gardens and others out so your cat can enjoy the freedom of the outdoors
PVC pipe toppers to keep climbing dogs in fences
Cat Runs - Cat Enclosures - Builders & Suppliers - Pictures & Links
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Wire Lock on Roll Bar Fence - yoursassyself.com
Struggling to keep your pets In your yard and/or keeping coyotes out? Try this roll bar fence DIY. It's totally helped us with our problem.