It causes their body temp to rise crazy fast. Hyperthermia?I asked my vet about this and she consulted some of her professional sources. She told me cats are not at risk from hops and most dogs will just get sick. Greyhounds have the greatest risk and almost all reported fatalities have been greyhounds.
I have read cats are the same. Anytime I'm in the kitchen messing with hops, my butthead of a cat is clawing at me thinking I am messing with cheese or treats.