Puppies need to be 6 - 8 weeks old to protect them with their first vaccines as early as possible.
The earliest is 6 weeks it's recommended between 6 and 8 weeks the earlier you do it the sooner your puppy is protected from all of those things that the vaccination does because it's 6 weeks the hormones and extra antibodies that mommy gives a puppy start to wear off
I believe they have to be over 8 weeks old to get there first shots
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