As I say, a small amount of blood in the stool is not uncommon and can have a number of causes including:
- Stress (from moving home and being in a car)
- An abrupt diet change
- Parasites (such as worms or Giardia)
- An infection
- Toxin ingestion
The most important thing is that Kichi remains well. He should be gaining weight, happy to eat and energetic. His gums should remain pink and moist at all times.
If the breeder does not respond and there is concern he has not. been wormed, I would go ahead and give him a course of Panacur anti parasite therapy.
I would also start him on a course of probiotics such as Protexin Prokolin which can be purchased online or from a pet shop without prescription. Usually 3 days is all that is needed.
I would give a day or two of small meals of just boiled chicken and rice rather than dog food. This rests the gut. Then, gradually transition over to the puppy food of your choice. At the same time, avoid any treats or chews which may cause stomach upset.
Fingers crossed his stool goes back to normal very shortly and he remains well.
If anything changes or you have any further questions, please just let me know.
Take care and enjoy your new pup!