My 1-month-old puppy has live worms and black poop. Is it serious?

Black stool indicates digested blood from the upper GI tract (esophagus, stomach or upper small intestines). It could be that Daisy's dewormer killed a large burden of parasites in her stomach that contained blood, or that she has a significant GI ulcer. Daisy should see her vet to determine if there is a likelihood of active bleeding, a heavy burden of parasites in her stool, and then treat with any necessary antacids. Given her young age, this sign is more concerning and urgent in nature.

I am sorry to hear that Oscar is so ill. His symptoms are very suspicious of parvovirus, which can be lethal to pets. He could also have intestinal parasites. The black stool indicates that he may have some blood in his poop. You should take him to your local vet to get tested. If he does have parvovirus then he needs treatment (i.e. antibiotics, fluids, pain medication) through your vet for any chance of survival. If he only has intestinal parasites, then the vet can prescribe the appropriate dewormer based on which parasites are present on his fecal exam. I hope your puppy gets well soon and does not meet the same fate as your other poop puppy. If your pup does well, then make it a point to get Oscar vaccinated soon to protect him from deadly viruses like parvovirus and others, which are totally preventable through regular immunizations. Best wishes!

It could be extremely rare for a dog to get the flu from a human, so I don't think it's that. Black poop with blood in it indicates bleeding in the upper and lower GI tract. This can have very serious causes like parvovirus, a foreign body, or eating something toxic. You need to take Coco into a vet immediately. Since you are sick, have a friend or family member take him in.

The clinical signs in combination with the age of your dog are causes for concern for the parvovirus. I would make sure she is tested for this immediately, because of how aggressive this disease process can be. It often requires significant hospitalization and therapy in order to make things right.

Black stool could indicate blood in the stool. Vomiting, and black stool could be caused by parasites, change in diet, toxin ingestion, infectious viral diseases, blockage in the intestines caused by ingestion of a foreign body, or a mass/growth in the gastrointestinal tract. In the case of an unspayed female dog , pyometra (a potentially fatal infection of the uterus) is a possibility as well, and this is very concerning. Please have Cassie seen by a veterinarian as soon as possible, as vomiting and possible blood in the stool can lead to dehydration and anemia, and can be very dangerous if left untreated. I recommend taking in a fecal sample from Cassie to your vet as well, as that may aid them in making a diagnosis. Good luck, and I hope she feels better soon!

Yes, I would be concerned. It could be the change in diet causing the blood in Snow's poop, it could be intestinal worms since she hasn't been dewormed yet, or it could be an illness. I'd take her into a vet today to get checked out. Best of luck.

Black stool and extreme weakness are concerning symptoms that are an emergency and require veterinary care, especially in a young puppy. It would be best to bring Aura into your vet immediately for an exam and treatment.