You can lock them close to each other, but this is the perfect time to start getting them used to not always being in close contact with their brother. Raising two puppies at the same time is a lot more work than just one. However, if done correctly, you can double your puppy's pleasure. If you're adamant about having two puppies, avoid locking them together.
If one puppy dirties the box, the other is trapped in the mess, and the smell can cause it to litter the box as well. In addition, puppies can get into fights and can become too dependent on each other to the point that they can't function on their own. Keep puppies in separate cages, out of sight of the other, so they don't get distracted from each other. Your goal is to make each puppy feel safe on their own.
Instead of focusing on bringing the puppies together, focus on uniting each puppy with you, because you are the leader of the pack. Training two puppies at the same time is nearly impossible for one person and training them at the same time (though not simultaneously) is generally not recommended due to the risk that they will develop littermate syndrome. Allow your puppies to establish their relationship, but intervene if one of them becomes too dominant. Because of this dependence on each other, your puppies will begin to show severe symptoms of high anxiety every time they are separated.
Fortunately, there are a couple of ways you can teach your puppies to be more independent, even if they have to live in the same house. One of the challenges of raising two puppies is finding one-on-one time to spend with each one every day. Taking these steps will help unite your dogs with you for life and lay a foundation that helps your new puppies move toward a happy, well-adjusted life as the newest members of your family. Skilled dog breeders are careful to place two puppies together in a house because they know how much work it is to raise both of them properly.
The program is designed by a breeder with more than 40 years of dog ownership, many of whom have been professionally bred and trained and is the result of feedback from customers who have brought their new puppies home over the years. Adriana Jerez, owner of Loving Paws Dog Training in Charlotte, North Carolina, adopted two German Shepherd puppies at the same time. If you have two puppies at once (also known as “twin dogs”), you will get the benefits of having the dogs play with each other and burn a lot of that puppy's energy in your own home. You'll do this by leaving one puppy home alone from time to time when you take the other puppy out and place the dogs in separate cages and rooms.
This helps ensure that your puppies don't develop a dependence on each other and gives them the best chance of having a healthy and independent lifestyle. Gradually separate the cages so that eventually your puppies will feel comfortable sleeping in different rooms or on both sides of the bed. Having two puppies will also double the cost of regular puppy bills, which include food, grooming, veterinary costs, toys, dog training, dog day camp, and everything in between. You can't let yourself be lazy to expose your puppies to the world just because the interior of your own home offers so much entertainment.