Breakaway collar is a must. I had a cat die from a collar my sister put on her and it got caught under a fence, I was 10 at the time and have not forgotten about that incident. I'm hoping I can use some kind of elastic, I find that's the best.
Have you had any experience with these calming collars?
Rosie - 1999
Callie and Tigger, brother and sister - 2001
Akira - 2010
Peanut - 2010
Spencer - 2013
Trey our 3 legged terror - 2014