When going anywhere with my dogs whether that be on vacation, hunt test, hunting, etc. I never leave home without these things.
First Aide Kit which ALWAYS include bendadryl, honey, gauze, staple gun, EMT gel, probiotics, vet wrap, small amount of food, hydrogen peroxide, gauze, scissors, tape, rubber gloves, towel, and water.
I keep one in my dog trailer and one in my car because you never know when you might need one. I have attached a link to some products on amazon that are essential for your first aid kit or you can go to the GunDog supply and buy a complete kit. If you own a dog I highly recommend getting one for your home and for your car.