Are Dogs Adopted During the COVID-19 Pandemic More Dangerous?

The COVID-19 pandemic changed countless aspects of daily life, including pet ownership. As millions of Americans worked from home and sought companionship during lockdowns, dog adoption rates surged. Animal shelters across the country experienced record demand, while breeders struggled to keep up with unprecedented interest in puppies. At the same time, veterinarians, animal behaviorists, and trainers began raising concerns about a generation of “pandemic puppies” that may not have received adequate socialization during critical developmental periods.

As these dogs have matured, many people have wondered whether dogs adopted during the pandemic are actually more dangerous. The answer is more nuanced than a simple yes or no. Current research suggests that pandemic-era dogs are not inherently more aggressive because they were adopted during COVID-19. Instead, some experienced unique environmental challenges, including reduced exposure to strangers, fewer opportunities to interact with other dogs, inconsistent training, and separation anxiety, that may increase the likelihood of behavioral problems, and serious dog attacks, if left unaddressed.

The Pandemic Adoption Boom

When stay-at-home orders were implemented in 2020, shelters experienced an extraordinary increase in adoptions and foster placements. Many shelters temporarily emptied as families looked for companionship, emotional support, and opportunities to exercise outdoors. The adoption surge became so dramatic that some organizations reported waiting lists for available dogs.

Several factors contributed to this trend:

Increased loneliness during lockdowns
Remote work providing more time at home
Families seeking companionship for children
Greater flexibility to care for a new pet
Increased interest in fostering shelter animals

While these adoptions had many positive outcomes, experts soon recognized that raising a puppy during lockdown was very different from raising one under normal circumstances.

Why Experts Became Concerned About “Pandemic Puppies”

Dogs undergo a critical socialization period during the first several months of life. During this window, puppies ideally encounter:

New people
Children
Other dogs
Traffic
Restaurants
Parks
Veterinary clinics
Groomers
Loud noises
Different environments

COVID-19 restrictions significantly reduced many of these experiences. Instead of learning that strangers, bicycles, delivery drivers, or crowds were normal parts of life, many puppies spent nearly all of their early months inside their homes with only their immediate families. Researchers studying thousands of dogs found that reduced routine, fewer social experiences, and changes in owner interactions influenced later behavioral development.

Does Research Show Pandemic Dogs Are More Aggressive?

The evidence does not support the claim that all pandemic-adopted dogs are inherently more dangerous. Instead, researchers have identified increased risks for certain behavioral challenges in some dogs, including:

Separation anxiety
Fearfulness
Reactivity
Poor leash manners
Difficulty meeting unfamiliar people
Difficulty interacting with unfamiliar dogs

Importantly, studies have also found that many behavioral problems actually declined as lockdown restrictions eased and dogs gained more normal experiences. In other words, the environment, not simply being adopted during COVID-19, is the key factor.

First-Time Owners Played a Role

The pandemic also produced a large number of first-time dog owners. While enthusiasm was high, many families underestimated:

The amount of daily exercise required
Training commitments
Behavioral development
Socialization needs
Long-term financial responsibilities

Research from the Royal Veterinary College found that many pandemic puppy owners struggled with training and reported multiple behavioral concerns as their dogs matured. This does not mean the dogs were dangerous. Rather, many owners simply lacked experience recognizing or managing early warning signs.

Separation Anxiety Became More Common

One of the most common behavioral issues observed among pandemic dogs was separation anxiety. Many dogs spent nearly every hour with their owners during lockdowns. When workplaces reopened, these dogs suddenly experienced:

Long periods alone
Changes in routine
Reduced exercise
Less interaction

Behaviorists have linked these abrupt lifestyle changes with increased separation-related behaviors in some dogs. Signs include:

Excessive barking
Destructive chewing
House soiling
Escape attempts
Panic when owners leave

Although separation anxiety does not automatically lead to aggression, stressed dogs may react unpredictably in certain situations.

Fear-Based Aggression Is Often Misunderstood

Most aggressive dog behavior is rooted in fear, not dominance. Poorly socialized dogs may become frightened when encountering unfamiliar:

People
Children
Dogs
Loud environments
Veterinarians
Delivery workers

Fear can cause a dog to:

Growl
Bark
Snap
Bite

Many bites occur because owners fail to recognize these warning signs before an incident occurs.

Are Shelter Dogs More Dangerous?

Some people assume adopted dogs are naturally more aggressive than dogs purchased from breeders. Research does not support this stereotype. While some adopted dogs arrive with unknown histories or previous trauma, countless shelter dogs become safe, loving family pets with appropriate care, training, and socialization.

Behavior depends on numerous factors, including:

Genetics
Early experiences
Training
Owner responsibility
Medical conditions
Daily environment

Shelter adoption alone does not predict aggression.

Dog Bite Statistics

Dog bites remain a significant public health concern in the United States. According to the Centers for Disease Control and Prevention (CDC) and other public health sources:

Approximately 4.5 million dog bites occur annually in the United States.
Around 800,000 victims require medical treatment each year.
Children account for a large percentage of serious injuries.
The face, neck, and hands are the most commonly injured areas in children.
Thousands of bite victims require reconstructive surgery every year.

Importantly, there is currently no national evidence showing that dogs adopted during COVID-19 are responsible for a disproportionate share of bite injuries. Instead, researchers emphasize that inadequate socialization, inconsistent training, and owner experience are more meaningful predictors of problematic behavior.

Illinois Dog Bite Law Protects Victims

Illinois has one of the strongest dog bite statutes in the country. Under the Illinois Animal Control Act, owners may be held liable when:

Their dog attacks or injures another person;
The victim was lawfully present; and
The victim did not provoke the dog.

Unlike some states, Illinois generally does not require proof that the owner knew the dog had previously bitten someone. This means victims often have legal rights even if the attack was the dog’s first known bite.

Preventing Dog Bites

Owners can significantly reduce bite risks by:

Properly socializing puppies
Using positive reinforcement training
Supervising interactions with children
Recognizing stress signals
Providing adequate exercise
Seeking professional behavioral assistance when problems develop
Avoiding punishment-based training methods

Responsible ownership remains the single most effective way to prevent dog attacks.

Frequently Asked Questions about Dog Bites

Are pandemic puppies naturally aggressive?

No. Current research does not show that dogs adopted during COVID-19 are inherently more aggressive. However, some experienced reduced socialization and training opportunities that may contribute to behavioral challenges.

Why do some pandemic dogs seem reactive?

Many had fewer opportunities to interact with unfamiliar people, dogs, and environments during critical developmental stages, making them more fearful or anxious in new situations.

Can training improve aggressive behavior?

Yes. Many behavioral issues improve with early intervention, positive reinforcement, professional trainers, and veterinary behavioral support.

Does Illinois require one free bite before liability?

No. Illinois generally follows a strict liability approach under the Animal Control Act, meaning owners may be liable even if the dog has never bitten anyone before.

Who is most likely to suffer serious dog bite injuries?

Young children experience the highest rates of severe injuries because they are more vulnerable to bites involving the face and neck.

Should I contact an attorney after a dog bite?

Yes. Dog bite injuries often involve significant medical expenses, lost wages, permanent scarring, and emotional trauma. An experienced Illinois dog bite attorney can investigate the attack, preserve evidence, negotiate with insurance companies, and pursue the compensation you deserve.

Contact the Seasoned Illinois Dog Bite Attorneys at John J. Malm & Associates

While the COVID-19 pandemic created a unique generation of dogs with different socialization experiences, the evidence does not support the conclusion that dogs adopted during the pandemic are inherently more dangerous. Instead, experts agree that responsible ownership, proper training, early socialization, and recognizing behavioral warning signs play the greatest role in preventing attacks. Unfortunately, when owners fail to take reasonable precautions, innocent people can suffer life-changing injuries.

If you or a loved one has been injured in a dog attack anywhere in Illinois, the experienced attorneys at John J. Malm & Associates are ready to help. We understand the physical, emotional, and financial impact of serious dog bite injuries and are committed to fighting for the full compensation you deserve. Contact us today for a free consultation, and let us explain your legal rights and how we can help you move forward with confidence.