Why is my puppy breathing fast? Could roundworms be the reason?

It could be that Mighty is suffering from intestinal worms which are common in puppies and would give a bloated appearance to the stomach. I would give him a deworming treatment now, and another in two weeks to kill all the worms. He should then be dewormed monthly until he is six months of age, and should be dewormed every three months thereafter. As for breathing quickly when trying to sleep, this can be normal and I wouldn't be concerned about it unless he's breathing quickly all the time. Best of luck, I hope this helps!

I would recommend bringing him in for an exam. Sometimes rapid breathing can be a sign of discomfort or illness. It is possible he may need a few rounds of deworming, or could have an infection and associated fever. Either way, around 8 weeks is when he should be getting his first round of vaccines and an exam, so I would simply talk to your veterinarian at that appointment.

65 breaths per minutes is an emergency, you cannot wait until Monday as she may very well not make it that far, you need to take her to the vet today. it could be related both to heartworm and the mammary gland tumors.

If Korra is completely asleep and not dreaming, then 96 breaths per minute is very abnormal, and I would recommend that she be seen by a vet immediately. Possible causes for lethargy and increased breathing in a puppy include pneumonia, infection, anemia, intestinal parasites, among a few other causes. After examination, the vet may recommend bloodwork and/or x-rays to see what could be going on. It can be very hard to guess what breed a puppy is since they don't yet have the adult characteristics. If I had to guess I would think some shepherding breed, like Australian Shepherd or Border Collie.

8 weeks is the time for a first puppy exam and having the first course of puppy vaccinations. Looking a bit bloated is a possible sign or intestinal parasites (all puppies have them) and therefore it is also time to worm your puppy. When you take him to your vet for first shots, he will worm the puppy as well.

I would recommend that you have Rousey checked out by a vet. Breathing that quickly is not normal. While sleeping, she should breathe less than 20 times in a minute. Increased respiratory rate at night could indicate heart or lung disease, anemia, or pneumonia. If she has fractured ribs, she could benefit from pain medications. She should probably also be checked for intestinal parasites, which are easily picked up while hanging out on the streets.

Dogs get heart worms from mosquitos. Breathing faster than normal could be due to heart worms, but it could also be due to other things such as pain, heat, fever, heart disease, or a respiratory infection. I'd have Molly checked out by a vet.