Wife and I took a first aid class just for dogs. We learned a lot. First time I had heard of doggie specific first aid kits was at the class.I’ve never used or seen in person the pet kits, but they’re on the website, last I looked. Having a specific kit for Fido or Fluffy had never crossed my mind until I read their description, it makes a lot of sense
Israeli bandages are very multi purpose! They can be used as a general pressure bandage, as a TQ (in a pinch), binding for a splint, ace wrap, arm sling, and tons more if you’re creative.I usually will build my kits for that I am trained for and what I think I need, which I have to remember to keep tamed, otherwise it will be the size of the truck. I think the training is just as important as the equipment, because I you don't know how to use it correctly, then it can cause more harm than good.
Also look for items that have dual purpose. You single use items like an Israeli Bandage has it's one job, things like triangle bandages can do a few things from sling and bandage, etc.