Parents' rescue black lab Eliza has been throwing up from time to time all summer. Recently she started throwing up during the day, often only bile- no food left. Vet thought it might have been she had swallowed water from the lake (miscrosystin from the blue green algae), then thought it might be viral. Today she is very weak, not interested in eating anything (even didn't want banana, her favorite). Lying on the porch breathing rapidly, salivating a lot even having muscle tremors like she's having small seizures. Finally struggled to her feet and started drinking a lot of water. Had to stop since she was panting and out of breath. We went to a potluck for a retiring island woman, and left her on the porch. Came back and she was down at the end, under the table sort of. I brought out her bed, and had to lift her up onto it. She barely made it on, then collapsed panting. Still salivating a lot (never seen a dog drool with their mouth closed before like this) and didn't want water. There's a script for Tramodol, and the vet said its about keeping her comfortable until the end. Very sad.