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My dog is lethargic, losing weight, and has fleas. Is she sick?

Updated On September 23rd, 2025

Pet's info: Dog | American Staffordshire Terrier | Female | unspayed | 4 years and 7 months old | 160 lbs

So my dog is eating less and playing less she has been losing weight and all she likes to do is lay on the floor and have someone pet her she was a active dog before and I done know what happened is it possible my dog is depressed or something is wrong with her my dog also has fleas but I have been showering her once a week so that the fleas die

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1 Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on September 14th, 2019

I recommend to have Mony examined by the veterinarian. The weight loss and the decreased energy likely represent illness. This could range from something like a parasite infection to an infection in her uterus. Since she can't talk and tell you whats happening, I recommend to play it safe and have her examined. Regarding the fleas, baths don't tend to work well to control fleas. I recommend to use a monthly flea product. Top products for dogs are oral products such as Simparica and Nexgard. You will need to switch all the pets over to a good flea product. Make sure to discuss these products with your veterinarian first. These products are generally safe for all pets but there are some conditions which are contraindicated for the oral products. Cleaning up and treating the house and yard will also help but it will not clear all the fleas. The main control is making sure the pets are on good products. This is what will ultimately stop the infestation. Also remember every female fleas lays about 50 eggs a day and it could take up to 6 months before the eggs hatch. Therefore, you will need to treat for at least 6 months. Best of luck and please feel free to post any additional questions.

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