my friends dog was playing in the little baby pool for about two hours, she has thrown up once, but now she is listless and shaking. She is a hyper Jack Russell who won't move off the couch!! Is she tired, or something else????
She could have over exhausted herself or just drank too much water by accident. You know how you go into a pool for a long time, jumping in and out you will have a weird feeling in your lungs. If you were to do it too long you will feel sick also. I wouldn't worry about it. Give her a day or two and she will be back to normal.
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