[tag="PRP$"] [lemma=dog] □ □ □
[tag="PRP$"] [lemma=dog] [□] □ □
[tag="PRP$"] [lemma=dog] (□ | □) □ □
The treatment is lengthy , and your dog may become quite ill during the course of treatment . However , as the disease progresses , your dog may cough , become lethargic , lose its appetite or have difficulty breathing . Your dog may be a great companion . For example , if you think your dog may be panicked or defensive in crowds , leave the dog at home . After a long week without exercise , your dog may be ready to get out and burn off energy .