Bringing a rescue dog home can be a heartwarming experience, but it’s not without challenges.
A study in the Journal of Applied Animal Welfare Science found that behavioral issues were the main reason dogs were returned to shelters, with most returned dogs being over six months old. Notably, 20% of adopters who took in the same dog at different times reported the same behavioral problems, underscoring the persistence of certain issues.1
By understanding these 15 red flags, you’ll be better equipped to make an informed decision and provide a loving, forever home to a deserving canine companion.
1. Aggression or Extreme Fear
One of the most significant red flags to be aware of when adopting a rescue dog is aggression or extreme fear. While many shelter dogs may be initially nervous or shy, signs of severe aggression or fear can indicate deeper issues that may require extensive rehabilitation.
If you notice a dog displaying aggressive body language, such as growling, snapping, or lunging, or if they exhibit extreme fear, like quivering, trembling, or trying to escape, it’s essential to proceed with caution.
These behaviors often necessitate commitment and expertise that not all adopters can provide, so it is crucial to consult with shelter staff and professional trainers.
2. Resource Guarding
Resource guarding, or a dog’s tendency to aggressively protect their food, toys, or other valued items, is another red flag to watch for when adopting a rescue dog.
While mild to moderate resource guarding can often be managed with proper training and management, severe cases may pose risks to people unfamiliar with canine communication.
If a rescue dog shows signs of resource guarding, working closely with shelter staff and professional trainers to assess the severity and develop an appropriate management plan is essential.
3. Lack of Socialization
Rescue dogs may have gaps in socialization due to their previous experiences, leading to fear or anxiety in new situations or around specific types of people. For example, dogs may fear men, people wearing hats, or other dogs.
While some socialization issues can be overcome with patience and positive exposure, it’s important to be prepared for the potential need for ongoing training and management.
Adopters should be willing to work with their rescue dogs at their own pace and provide a safe, supportive environment for them to build confidence.
4. Health Issues
Rescue dogs may have pre-existing health conditions requiring ongoing care or management. Some red flags to watch include visible injuries, signs of illness, or unexplained weight loss.
Working closely with shelter staff and veterinarians is crucial to understanding a rescue dog’s health history and ongoing needs.
Adopters should be prepared for potential medical expenses and the time commitment required to manage chronic health conditions.
5. Separation Anxiety
Separation anxiety is a common issue among rescue dogs, particularly those who have experienced multiple homes or traumatic separations in the past. Signs of separation anxiety may include destructive behavior, excessive vocalization, or house soiling when left alone.
While separation anxiety can be challenging to manage, it’s important to remember that it’s a treatable condition.
Adopters should be prepared to work with professional trainers and implement a consistent, positive training plan to help their rescue dogs feel more secure and confident when alone.
6. Lack of Basic Training
Many rescue dogs lack basic obedience training or house manners, which can frustrate unprepared adopters. Common issues may include jumping, pulling on the leash, or not responding to basic commands.
While training is essential to any dog’s life, it’s important to approach it with patience and understanding when working with a rescue dog.
Adopters should be prepared to invest time and resources into positive reinforcement training and work with professional trainers if needed.
7. Incompatibility with Existing Pets
Not all dogs get along, and compatibility is essential when introducing a rescue dog to existing pets in the home. Rushing introductions or ignoring signs of tension can lead to serious conflicts and potential rehoming.
Adopters should work closely with shelter staff to understand a rescue dog’s history with other animals and take a slow, controlled approach to introductions.
Providing separate spaces, resources, and positive reinforcement can help ensure a smooth transition for all pets involved.
8. Breed-Specific Traits
While every dog is an individual, certain breeds may come with specific traits or needs that adopters should know. For example, high-energy breeds like Border Collies or Australian Shepherds may require extensive daily exercise and mental stimulation.
Researching a rescue dog’s breed or mix can provide valuable insight into potential needs and challenges.
However, it’s important to remember that a dog’s personality and experiences also significantly influence its behavior and needs.
9. Lack of Interest in People
While some rescue dogs may be initially shy or reserved, a lack of interest in people can be a red flag for potential socialization or behavioral issues. A dog who consistently avoids interaction or shows no signs of warming up over time may require specialized care and training.
Adopters should work closely with shelter staff to understand a rescue dog’s history and comfort level with people.
Building trust slowly and patiently and providing positive experiences can help a shy dog blossom in its new home.
10. Inconsistent or Unclear History
Rescue dogs often have incomplete or unclear histories, making it challenging to predict potential issues or needs. While shelters do their best to gather information, some details may be unknown or inconsistent.
Adopters should be prepared for unexpected challenges or surprises when adopting a rescue dog with an unclear history.
Working closely with shelter staff, veterinarians, and professional trainers can help identify and address any issues.
11. High Arousal or Hyperactivity
Some rescue dogs may exhibit high levels of arousal or hyperactivity, which can be challenging for inexperienced adopters to manage. These dogs may have difficulty settling, focusing, or controlling their impulses.
While high-energy dogs can make wonderful companions for active families, the time and resources required to meet their needs must be considered.
Adopters should be prepared to provide ample exercise, mental stimulation, and positive reinforcement training to help these dogs thrive.
12. Escape Attempts or Wandering
Rescue dogs may be more likely to attempt to escape or wander, particularly in the early days of adoption8. This can be due to fear, confusion, or a lack of attachment to their new home.
Adopters should take extra precautions to secure their homes and yards and provide close supervision during the initial adjustment period.
Microchipping, identification tags, and a consistent routine can help prevent accidental escapes and ensure a safe return if a dog does get lost.
13. Lack of Bladder or Bowel Control
Some rescue dogs may struggle with house training or have accidents due to stress, medical issues, or a lack of previous training. While this can be frustrating for adopters, it’s important to approach the issue with patience and understanding.
Working with veterinarians to rule out underlying health concerns and implementing a consistent, positive reinforcement-based house training plan can help rescue dogs succeed.
Adopters should be prepared for potential setbacks and celebrate small victories.
14. Reactivity on the Leash
Leash reactivity, or a dog’s tendency to bark, lunge, or become agitated when seeing other dogs or people while on a leash, is common among rescue dogs. This behavior can be due to fear, frustration, or a lack of socialization.
While managing leash reactivity can be challenging, it’s important to remember that it’s a common issue that can be improved with patience and training.
Adopters should work with professional trainers to develop a positive reinforcement-based training plan and gradually expose their dogs to triggers in a controlled, supportive environment.
15. Inconsistent Temperament
Finally, an inconsistent or unpredictable temperament can be a red flag when adopting a rescue dog. Predicting a dog’s needs or potential challenges can be challenging if its behavior varies significantly daily or in different situations.
Adopters should work closely with shelter staff to gather as much information as possible about a rescue dog’s temperament and behavior in various contexts.
Building trust slowly and patiently and providing a consistent, predictable environment can help rescue dogs feel more secure and stable in their new homes.
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Davin is a jack-of-all-trades but has professional training and experience in various home and garden subjects. He leans on other experts when needed and edits and fact-checks all articles.