What To Consider When Adopting an Adult Dog

Diamond's Friends Pet Rescue
Jun 17
4 min read

Updated: Jun 29

Bringing home an adult dog can be one of the most rewarding decisions you’ll ever make. That said, it's important to know what you're signing up for.

Adult dogs often come with a blend of charm, challenges, and untapped potential. But no matter what, they are so worth the effort!

Here’s what to consider when welcoming an adult pup into your home.

1. They Have a History

But then again, don’t we all?

Unlike puppies who are blank slates, adult dogs usually come with life experiences. These may be good, like knowing how to live in a home, or they may be, such as trauma or neglect.

It’s essential to approach these pups with empathy. Understanding that their behavior may reflect their history helps you approach them with patience.

The good news? With some patience, most dogs can adapt beautifully to a new environment.

2. Adjusting Takes Time

Don’t expect your new dog to feel at home overnight. It often takes several weeks (sometimes longer) for a dog to settle in.

Think about it this way: would you be instantly comfortable in a new apartment with new roommates that you had never met before? No! So why would you expect your dog to be immediately comfortable?

Experts suggest using the 3-3-3 Rule as a guide:

3 days to decompress
3 weeks to learn the routine
3 months to feel truly comfortable

A predictable routine and low-pressure environment can work wonders during this adjustment period.

Learn More: The 3-3-3 Rule

3. Their Personalities Are Likely a Little More Established

One of the perks of adopting an adult dog is that what you see is often what you get.

Their likes, dislikes, quirks, and temperament are more apparent than in puppies. This makes it easier to find a dog whose personality matches your lifestyle, whether that’s an adventure buddy who is ready for an epic high or a laid-back lapdog who is happy spending their days participating in your Netflix binge sessions.

Learn More: How To Choose the Right Dog for Your Home

4. They Might Already Have Some Training…

Many adult dogs come with some training. Housebreaking, leash manners, crate training, and basic commands may already be in place. This can make the transition smoother for you and them!

This is especially helpful for first-time dog owners or anyone not quite ready for the chaos of puppyhood.

5. …But They Will Still Need Training

Even with previous experience, most adult dogs will need refreshers or additional training to adjust to your home’s rules. Inevitably, your rules may not be the same as the rules in their last home.

Maybe they were never taught to stay off the couch. Or, maybe they have leash-reactive tendencies. They may still exhibit some puppy tendencies, such as chewing or separation anxiety.

Consistency and patience are critical to helping them thrive. Additionally, having a trainer on speed dial is a great resource to help you address any behavioral quirks that may arise.

Learn More: Professionals Every Dog Owner Should Have in Their Contacts

6. Energy Levels May Vary

Not all adult dogs are calm, couch-potato types. Age doesn't necessarily mean low energy, especially for working breeds or dogs under five years old.

That said, you likely won’t be dealing with puppy-energy chaos, which can be a relief.

Be sure to ask about the dog’s daily energy level and exercise needs. Whether you're looking for a hiking companion or a movie-night snuggler, there's an adult dog out there to match your pace.

Learn More: How To Choose the Right Age Dog for Your Home

7. Many of Their Health Needs May Already Be Addressed

One major perk of adopting an older dog? Many have already been spayed or neutered, microchipped, and vaccinated. Plus, you'll often get a better understanding of their long-term health.

Puppies may still need to complete their initial vaccinations or undergo spaying or neutering. This means that with an adult dog, you will likely be looking at fewer trips to the vet.

However, some dogs may have chronic issues or require ongoing care. Routine vet visits are essential to keeping your new companion happy and healthy.

Learn More: Adult Dog Vaccine and Veterinary Schedule

8. You Can Still Develop a Strong Bond

There’s a silly myth that bonding only happens if you raise a dog from puppyhood. That’s fake news.

In reality, adult dogs are fully capable of forming deep, loyal connections with their new families. In fact, many adopters say their adult dogs seem especially grateful for a second chance and that the affection they give in return can be incredibly meaningful.

So, don’t let the fear of not bonding with an adult dog hold you back from making one part of your family.

9. Your Life Will Change

Welcoming any dog into your home is a big commitment. Be prepared to adjust your daily routine around walks, feeding times, and companionship.

Unlike puppies, adult dogs may have an easier time staying home alone or sleeping through the night. That said, they still need attention, exercise, and mental stimulation to stay balanced.

10. You Are Giving Them a Second Chance

Adult dogs are frequently overlooked in shelters in favor of younger pups. But adopting one can change their life forever.

Data from Shelter Animals Count reveals that close to 334,000 dogs were euthanized in United States shelters and rescues in 2024. Many of these were adult dogs that simply ran out of time because there wasn’t enough space in shelters.

The bottom line is that when you adopt an adult dog, you’re not just getting a pet. You’re saving a life.

Final Thoughts

Adopting an adult dog can bring immense joy and companionship into your life. With the right preparation and mindset, you'll be so happy you chose to give an adult dog the second chance they so deserve.