Some of the things to consider are gender, size, and age. Most experts agree that, as a rule, male and female dogs get along better than two females or two males. However, that being said, I've known many households (including my own) that successfully have two of the same gender dogs without any problems at all.
Before settling on a breed, think about the gender of the dog. For the happiest dogs and the safest household, opposite sex dogs almost always do best together. Many same-sex combinations of dogs will fight, sometimes to the death. Those who work out a dominance order may not fare much better.
Having two dogs can be more than twice as much work as having one, and having three can require way more than three times as much effort. That pattern continues as the number of dogs increases.
Most animal care experts widely agree that three is not a crowd when it comes to owning more than one dog. Unlike that dreaded middle child syndrome you see in three-kid families, having three well-trained pups can be harmonious when the dogs balance each other out.
Gender matters with a second dog
Of course, there are exceptions to this rule, but generally, gender will play an essential role in whether your new dog will get along with your existing dog. Experts agree that the second dog should be of the opposite sex for the best possible chance of success.
Taking care of three sick dogs can be exhausting and emotionally demanding. Dogs need attention, and if you have multiple dogs, that means they need more attention. If you don't have time to devote to your pets, it's better not to take more than one dog.
Some of the things to consider are gender, size, and age. Most experts agree that, as a rule, male and female dogs get along better than two females or two males.
It would appear that many dogs can adapt to being alone for 8-9 hours at a time provided they have a means to potty and have adequate room to move.
In general, puppies become adult dogs between one and two years of age. But it's not like they wake up the morning of their first birthday and are suddenly grown-up dogs! In fact, puppy maturation is a process, and it varies from dog to dog depending on size, breed, socialization, and more.
Most dogs will happily adjust to life on three legs with your help and your vet's advice. In fact, they'll often be so busy running around, chasing balls and playing 'fetch' that they hardly notice anything's wrong.
Dogs are inherently social animals that live well together in groups, but that does not mean that all dogs get along. Most dogs will welcome a new sibling, but it is not always smooth sailing. The furry family member you have now will face many changes when a new dog enters the picture and may feel a bit displaced.
Two female dogs could act exactly like their male counterparts. As young pups, these two new female puppies may be friendly and pal around as you'd expect. But when they get a little older, they could vie for dominance.
More companionship.
If you're able to make it work, having three dogs can be incredibly rewarding. Three dogs means triple the amount of cuddles, kisses, and tail wags. With another dog in the house, they'll always have someone to play with – even when you're not home.
It's our only Down Dog rule – that when dogs meet and greet each other that time should be limited to three seconds, then you call your dog away and praise them for their wonderful manners. It does depend on the breed, and, most importantly, you only allow your dog to meet and greet if both dogs are happy to do so.
It's never too late to train a dog. Whether you are bringing home an older dog from a shelter (or rescue), or you'd like to work with your own older dog, there's no reason to delay doing some training with an older dog.
Two dogs are considered a "pair," while more than two are considered a "pack." With this said, you can begin working your dogs as a team with various command exercises.
It can take up to one month for an old dog and new dog to really settle in and accept each other's position in the pack. If you want a second dog, you need to be ready to commit to this process and not panic.
In dogdom, there's a turn of phrase called, "Second Dog Syndrome". This describes the process of adding another dog to the home quite well, but not necessarily in a positive light. As humans, we are bound to forget all of the time and effort it takes to raise a puppy right.