It is always a good idea to have your puppy’s stool sample checked for worms (even though checks don’t always find worms when your dog has them). Hookworms and roundworms are the two most common worms. Hookworms are microscopic and can cause your puppy to become anemic and death can occur rather suddenly. Roundworms are visible by human eye and resemble miniature spaghetti.
Puppies can pick up tapeworms (from cats or eating “wild game”). Some of the “foul” things they chew on can also allow them to pick up other organisms like giardi. Fleas can also give dogs tapeworms.
Panacur liquid wormer is my choice of wormers. I like to give panacur for 10 days, 12 days off, 10 days on, 12 days off, 10 days on. Panacur is a mild safe wormer; Safeguard is a cattle wormer but it is exactly the same as Panacur. For every 2.2 pounds of dog, ½ cc is recommended. This should get all worms except for one kind of tapeworm. No wormer is 100% effective and it is good to change wormers so as to not get resistance to the product. But always use a safe, mild wormer from your vet.
I like to follow up the first session of wormer with 7-10 days of metronidazole (wait 2-3 days between dosing).
If your puppy has giardia, the regimen for getting rid of it is piggy back the first round of panacur with Sulfa Trimeth Liquid pediatric suspension and while giving flagyl during the 12 days off piggy back that with amoxicillin, then follow as above for worming. Flagyl (metronidazole) is only about 60% effective and panacur is not 100% effective either. What does a giardia stool look like It can have some blood in it, not always and it usually has a pool of liquid or gell like substance around a perfectly normal consistency stool and sometimes can have a green or yellow cast to the gel like substance.