Why is my dog sick after a flea bath, peeing a lot, and not eating?

Stick needs to be examined by the veterinarian. It's possible this is a reaction to the flea product but it could be coincidental and be related to getting into something, liver disease or a systemic infection. Have him examined today. I hope they figure it out quickly.

He could be having an adverse reaction to the flea/tick medication. Give him a bath immediately! Then contact your local vet to have him examined and treated for an acute allergic reaction. The most important thing though is to wash off the product. Using dawn dish detergent works best to strip the product off. There is a chance that he has absorbed a good bit of the medication already, but this will help prevent further absorption and subsequent illness. Most adverse reactions to flea/tick products do well with time (minimum 12 hrs to see improvement). I hope your puppy Harley recovers soon!

I would be very concerned about that amount of weight loss and I doubt it would be related to fleas alone. Kidney disease, diabetes or certain types of cancer could cause weight loss and an increase in water consumption. I would recommend seeing a veterinarian- they may recommend checking some blood work after a physical exam.

I would take Chappie into a vet immediately. It's very concerning that she isn't eating or drinking at all, and with the vomiting, she will quickly become dehydrated. These combination of symptoms is not something I would wait to see if it passes, I feel she needs veterinarian care now. Best of luck.

I would agree that Finnigan also sounds very sick. The excessive peeing and urination makes me concerned about diabetes. In addition to the urinalysis I would recommend running some blood work. This would rule out the diabetes and also check his liver and kidney values. It may also be beneficial to take X-rays if the abdomen as well since he isn't eating well.

It's very concerning that Stela doesn't really eat, and that makes me concerned that she could have a stomach illness causing her to be nauseous, or it could be she has a foreign body. Drinking a lot of water isn't normal either, and that would lead her to pee a lot as a consequence. She could be scratching herself due to allergies or mites, but if it's been a while since she has had a flea treatment (it needs to be given monthly if it's a spot on treatment), it could be fleas. These are things that really need to be checked out by a vet, and I would recommend taking her into a vet asap. I hope this helps.

Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question about Gizmo. Poor boy. It could be he is experiencing an abnormal reaction to the flea medication, but it could also be he has a severe illness like kidney disease, GI illness, liver disease, heart disease, or even cancer causing his symptoms. He sounds extremely sick, and I do not think you should wait until tomorrow to take him into a vet. You need to take him into an ER vet immediately. Best of luck.