I noticed my Presley wasn't himself and was doing a weird hiccup breathing thing. He was breathing through his mouth! I luckily found this website and started right away with some treatment of ACV. I mixed 1/4 tsp of ACV w/water and with syringe fed him that 2x a day and also I did a steam bath 1:1. Enclosed his cat crate with a towel and put the sauce pan outside of his door and he sat breathing in for approximately 15 minutes. After his first treatment he literally began sneezing and got up to drink water and eat some food! I did this for 3 days and he's back to his old self!