My dog is lab/ boxer mix she has been flying between US/Germany for the past 7 years she is currently 9 years of age . I often state she has more frequent flyer miles than most humans. She has flown round trip 8 times thus far without difficulty. Rosie has a heart murmur born with it she also takes Phenobarbital diagnosed with seizures as a pup at less than 2 years of age, she flies excellently and thus far knock on wood without issues. I wish you the best with your fur baby .