Yes there is a law for selling them under 8 weeks old. They need their mum for the first8 week for their lives.
In the state of Ohio, a puppy must be at least 8 weeks of age.
if the pup is under 6 weeks it would be better to give it puppy formula and once it starts growing teeth around 8 weeks or older then you could start feeding it soft puppy food.
Puppies under 4-5 weeks of age need the mother's milk, or puppy formula found at pet supply stores. Over 4-5 weeks of age, they can eat puppy food.
after 8 weeks
If it`s a small puppy 8 weeks is the right age, but if it`s a large puppy it can go as early as 6 weeks.
A puppy receives it's first antibodies in the milk of it's mother, until it's two days of age. It must be noted that the puppy will only receive antibodies against diseases for which the mother had been recently vaccinated against or exposed to. As an example, a mother that had NOT been vaccinated against or exposed to parvovirus, would not have any antibodies against parvovirus to pass along to her puppies. The puppies then would be susceptible to developing a parvovirus infection.The antibodies from the mother generally circulate in the puppy's blood for a number of weeks. There is a period of time from several days to several weeks in which the maternal antibodies are too low to provide protection against the disease, but too high to allow a vaccine to work. This period is called the window of susceptibility. This is the time when despite being vaccinated, a puppy (or kitten) can still contract the disease.It is often recommended to vaccinate puppies with a combination vaccine at 6-7 weeks of age initially, with boosters given every three weeks until the puppy is about sixteen weeks of age. You should not put off inoculating your 9 week old puppy. Until your puppy has gotten the entire series of puppy vaccines, it should not be allowed to interact with dogs that are not current on it's vaccines.
About 8-12 weeks
The puppy should be 6 weeks old.
a puppy age is week old
A puppy could be missing from the litter after two weeks if it has died. The mother dog will take the puppy away from the others.
You can have your puppy fixed at around 12 weeks, not before.
16 weeks