It’s so hard to know that you are expected to wait patiently for your brand-new puppy to get old enough before you can bring them home. That adorable ball of fluff needs to be cuddled! How old do puppies need to be before they can leave their mothers?
If you’re waiting to bring your puppy home or if you’re just wondering about this question, you should know that puppies should be at least 8 weeks old before leaving their mothers.
While waiting a few extra weeks might seem like an eternity, there are significant reasons for your puppy to be the right age. Here, we take an in-depth look into these reasons and how vital a puppy’s time is with their siblings and mother. Sometimes, though, a puppy is orphaned at a young age, so we also briefly go over the steps that you can take to make things easier for a puppy without their mother.

The Importance of the First 8 Weeks for a Puppy
Puppies should be at least 8 weeks old before leaving their mothers and siblings. There are many reasons that puppies should stay with their families until this time.
Socialization
Puppies learn critical socialization skills from their mothers, siblings, and their caretakers. Socialization occurs in puppies from about 5 weeks to 14 weeks of age. This time is of the utmost importance in the development of every puppy. They take in and learn a great deal of information about the world. The experiences they have during this time will determine certain behaviors for the rest of their lives. It’s at this age that they also form strong attachments with the people looking after them.
Therefore, puppies need to be exposed to as many new situations, people, different environments, and other animals as much and as safely as possible. Socialization will have a significant impact on the puppy’s bond with their families, self-confidence, and behavior.
Breed/Size
Typically, toy breed puppies tend to stay with the breeder for longer than average-sized and large puppies. Tiny puppies are quite fragile and usually need to stay with their mothers and breeders until they are older.
Weaning
The average age when puppies are weaned from their mother’s milk is about 7 to 10 weeks, but they can start experimenting with solid foods from 3-4 weeks of age. Puppies need to nurse from their mothers until the natural weaning process occurs.
They should not be sent to their new homes until they have been completely weaned and are eating solid food. The unfortunate side effect of removing a puppy that hasn’t been adequately weaned is an anxious and insecure adult dog.
Behavior
Puppies learn valuable lessons from their siblings as another aspect of socialization. They start this learning process from 3 weeks of age, when they not only learn about the world, but they also learn about communication and play behaviors with other dogs.
Puppies also learn about controlling their biting and impulses via their mother and littermates. If puppies are taken away too young, they won’t have acquired the essential lessons of not biting too hard.
Legal
In the U.S., 28 of the 50 states have laws dictating what age puppies must be before being sold and leaving their mothers. Twenty-five of the 28 states require that puppies be a minimum of 8 weeks of age before being sold, while the other three require a minimum of 7 weeks of age.
There are variations among these laws with respect to punishment and whom it affects, but for the most part, it’s any breeder, even someone selling a puppy through social media. Across the entire U.K., it’s illegal to sell a puppy under 8 weeks of age.
Beware of anyone attempting to sell you a puppy that is under 8 weeks of age, as this might not only be illegal, but it’s also detrimental to the puppy’s wellbeing.

What Happens If a Puppy Leaves Their Mother Too Late?
Toy breed puppies tend to stay longer with their mothers, whereas large breed puppies aren’t usually kept for much longer than 10 to 12 weeks. Large breeds grow quickly, are quite strong, and can become extremely rambunctious. This can make taking care of your new puppy a bit more difficult because you’ll need to know how to deal with this large, overly excited animal. It’s ideal to start obedience training with a large puppy at 8 to 10 weeks of age rather than at 12 weeks.
What Happens If a Puppy Leaves Their Mother Too Early?
Behavioral problems are among the key issues that can occur if a puppy leaves their mother and littermates too early.
- Having anxiety issues
- Having a fear aggression (particularly with other dogs)
- Being highly reactive
- Resource guarding (food and toys)
- Being difficult to train
- Biting frequently and too hard
- Having problems with attachment (bonding too strongly or not strongly enough)
- Lacking confidence
As you can see, this is probably one of the most critical times in a puppy’s life until they are ready to leave for their new home by 8 weeks of age.
When a Puppy Is Orphaned
If you end up with a puppy that has lost their mother and littermates, you can do a few things to help with the socialization aspect.
- Wash the puppy after meals, as this can teach the puppy to clean themselves.
- Play with the puppy frequently to help teach socialization.
- Teach bite inhibition by mimicking the puppy’s littermates. If the puppy bites too hard, make a yelping sound and stop playing.
- When your puppy reaches 6 to 8 weeks of age, enroll them in a puppy training class. This will also help with socialization by allowing the puppy to interact with the other puppies.
If you do your research, speak to your vet, and learn how to take care of your new and very young puppy, it’s quite likely that you can raise a well-adjusted dog.

Conclusion
A puppy being taken away from their mother before 8 weeks of age puts them at a disadvantage. Any breeder looking to sell you a puppy before they’re actually ready to leave their mother should not be trusted. The breeder is likely more interested in the money from the sale rather than the puppy’s welfare.
As much as you might want your new puppy as soon as possible, you can see that it’s best for both of you to be patient. Once you do bring your new puppy home, you’ll know that they were worth the wait.
See also:
- How to Train Your Dog to Have Bite Inhibition
- Puppy Developmental Stages: From Birth to Adulthood (Vet Reviewed)
Featured Image Credit: Steve Adcock, Pixabay