Brewer's Dictionary of Phrase and Fable/Dog-sick
Dog-sick. Sick as a dog. We also say "Sick as a cat." The Bible speaks of dogs "returning to their vomit again" (Prov. xxvi. 11; 2 Pet. ii. 22).
Dog-sick. Sick as a dog. We also say "Sick as a cat." The Bible speaks of dogs "returning to their vomit again" (Prov. xxvi. 11; 2 Pet. ii. 22).