Veterinary questions? Ask a Vet for Answers ASAP
Hello, my name is***** and I have over 20 years of experience as a veterinarian. I am sorry to hear that your new puppy Stitch has diarrhea, with a bit of blood, and seems lethargic.
Thanks! Diarrhea can be due to a sudden change in diet, parasites, a viral or bacterial infection, or even a food allergy. It can also be related to congenital metabolic organ disease (such kidney or liver disease) due to organ wastes irritating the gut or a foreign body in the intestinal tract. Since he is lethargic and has only had one vaccine ideally he would see a veterinarian, especially if he is refusing to eat too. Well worth checking at least a couple fresh stool samples too as parasites are a common cause of loose stools with blood in dogs and parasite eggs/cysts are shed intermittently. They may be picked up on the second sample or third test if the first is negative.
In his case an abrupt diet change and/or parasites may be the issue. No wormers cover all parasites. Since he is eating if he cannot be seen right away there are some things we can try. Typing....
Today you can start Kao-pectate (generic Kaolin & pectin formulas are fine too) at 1ml per pound or 1/2 teaspoon per 2-5 pounds of body weight every 8-12 hours. This is quite safe and will coat her irritated gastrointestinal tract as well as absorbing bacterial toxins. You can find kao-pectate at the drug store. Continue the bland diet mix of 1/3 part boiled, lean hamburger (or boiled, white, skinless chicken), all fats drained off the meat, mixed with 2/3 parts boiled, plain white rice. Feed several small meals a day. Add 1 tablespoon of canned or fresh cooked pumpkin (not pie filling, just pumpkin) or squash to each meal since you are seeing blood in her stool as fiber helps soothe an irritated colon. Add probiotics to the bland diet mix to replace the good bacteria lost with diarrhea. Good brand name products include Fortiflora, Proviable, or Benebac. They can be found online or at pet stores.
Once she feels better (no diarrhea for 48 hours) start mixing in her regular puppy food very slowly, less bland more regular with each day. It should take a week or so to convert her back. If she starts vomiting and feeling poorly though it would be best that she see a veterinarian now as anything you give her orally will just come back up worsening her dehydration. It has been my pleasure to help you today. You are welcome to ask follow up questions about my response here, simply use the reply box and let me know. Thank you!~