Why is my dog suddenly tired and warm? How to check for fever?

Nancy may have an infected tooth in her mouth that is causing the discomfort and fever. I would recommend taking her to the vet to have an oral exam performed to look for a problem. You may also want to feed her soft or canned food until you determine the problem because thenkibble could further irritate the problem.

If your dog had been exercising or out in the heat it is possible his temperature could have increased due to this, but 104.1 is a pretty high temperature if you feel it was truly an accurate reading. We can see dogs temperatures get that high if they are really hot/excited/stressed and they are overweight or brachycephalic (smoosh faced) but I am concerned that his energy level was decreased. If he still doesn't seem himself tomorrow then I would bring him in for an exam. If overnight his temperature gets very high again, or he becomes weak, has trouble breathing, or his gums become pale in color or he starts having other symptoms like vomiting and diarrhea then I would consider bringing him in to the emergency vet.

If you have a thermometer you can take her temperature to check if she is overheated. You can lubricate the thermometer with vaseline/ky jelly/ or similar lubricant and insert about an inch into the rectum. If her temperature is over 102.5 then it is high. If she is acting lethargic and not eating or drinking well then these symptoms are concerning and should be investigated by a vet. There are many possibilities for these symptoms because they are so general. The vet may be able to narrow down causes with an exam, or they may need to do bloodwork on your dog for a better idea of the cause. If her temperature is high then she could have a fever or if it is very warm in your house could be suffering from heat stroke. You have done the right thing bathing her in cool water and providing a fan but she still needs to see a vet because there can be long term consequences such as severe GI irritation and infection if a dog has suffered heat stroke.

Poor Luckie! She doesn't have a fever, as a dog's normal temperature is between 38.3-39.2C. The nose isn't used as a sign of illness in a dog, as their nose can go from wet to dry just by sitting in the sun or laying next to a heat source. Lethargy is a very general sign of illness in dogs, and it could be caused by a systemic illness, infection, inflammation, or injury. She could be panting because she is in pain or stressed out, and the hard tummy could be hard due to constipation (unlikely because she is pooping regularly) or an upset stomach. Given that she doesn't have a fever, is eating and drinking, and going to the bathroom regularly, I would monitor her for now. If she is still lethargic in 24-48 hours, or she develops other signs such a vomiting, diarrhea, and anorexia, I would have her seen by a vet.

A fever this high is usually indicative of a bacterial or viral disease going on. Your veterinarian will need to run some tests to try and determine the cause of the fever. Once the cause is identified the proper antibiotics, antifungals, or antipruritic drugs can be prescribed. The tablet given to your dog is basically a fever reducer but will not treat the cause of the fever. I would recommend taking your dog in for a recheck as soon as you’re able to. The exact cause of the fever cannot be determined without further workup and diagnostics. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach. Best of luck.

Hi. This is hard to say. But you can determine if he has a fever by checking it with a digital thermometer rectally, then discard the thermometer. Normal temp is 99-102.5. At rest. Get him checked out if he has a true fever. Good luck

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Mags! Can you take her temperature rectally? Anything 103 F or higher is a fever. Causes of a fever are: Lyme disease, immune conditions, infection (urinary, joint, lung) or pending GI upset. If she isn't better by the morning she should be seen by your Vet. I wish you the best!