Adopting a 4-Year-Old Golden: Is Neutering Worth the Risk?
Sam Wood
Q: “I am a senior citizen who is contemplating adopting a 4-year-old intact Golden Retriever. I have had other Goldens, but they have all been neutered. What are the risks of neutering at 4? The dog has been living with a family since birth and is reportedly quite mellow, but I worry about creating anxiety for this guy. Any thoughts or ideas to make this as seamless as possible? Thank you.”
A: Neutering a dog at that age is generally not a major concern. Anesthetic complications can occur, but they are exceptionally uncommon.
A study involving more than 50,000 dogs across over 450 veterinary hospitals reported problems in fewer than 0.69% of cases, and for healthy dogs undergoing elective procedures, the rate is even lower (1). The majority of issues arose in obese or geriatric dogs with pre-existing health conditions.
Related: Should I Spay/Neuter My Dog?
7 Most Common Neutering Risks
fury123, Canva
Most potential problems tend to appear once the anesthesia has worn off. The most frequently seen ones include:
1. Weight Gain
For a long time, owners were told this was a myth, but removing the gonads does slow metabolism, meaning dogs need to eat less and exercise more. If the Golden you are adopting is already overweight, this becomes especially important.
2. Hair Loss or Other Changes in Coat
Not every dog experiences this after neutering, but in some cases, a thinner or thicker coat and even patchy color changes have been observed.
3. Behavioral Changes
Certain changes in a male dog after neutering are exactly what we hope for. Neutered dogs are less likely to:
- Mark their territory (though by this age, it is often just a habit, and males will still urinate all over the backyard even after being neutered)
- Mount other dogs (this can also be a dominance behavior and become a habit; neutering your dog will definitely not guarantee that it will stop)
- Wander
- Bother intact female dogs they come into contact with
Some changes, however, have not been studied much, but as we learn more about all of the behavioral changes from neutering, it is not surprising that some of them are negative.
Neutered dogs may be more likely to become anxious, and we know that neutered dogs have more noise phobia, try to escape more, and are more likely to become aggressive with strangers (2). There is still a lot to learn in this area, but a 2025 study on early neuters was able to document the behaviors I listed.
4. Increased Risk of Some Cancers
Lymphosarcoma is more frequently found in neutered dogs, but this may only happen when dogs are neutered very young. Hemangiosarcoma and mast cell tumors are also found more frequently in neutered dogs.
5. Orthopedic Diseases
Problems like hip dysplasia, ruptured knees, and elbow dysplasia are found more frequently in dogs that are neutered. The data available shows that a Golden that is neutered at less than 6 months of age is five times as likely to develop one of these problems (2). This does not mean that because your dog is neutered, he is going to have this problem—just that it is statistically more likely.
There is still no data on older Goldens when neutered, but we can say that the breed seems to be more prone to problems than some others when the gonads are removed.
6. Hypothyroidism
This hormonal disease is seen more frequently in male dogs that are neutered.
7. Cognitive Dysfunction
Dementia is also more frequently seen in neutered dogs. Although neutered males seem to suffer from cognitive diseases more frequently, we still do not know if that is dependent on the age the dog was neutered.
Related: Help, My Dog Is Aggressive After Being Neutered!
Is It Even Necessary to Neuter Your Dog?
jfjacobsz2, Canva
No, it is not necessary to neuter your dog. There are few and very weak medical reasons to neuter a male dog. The type of cancer you can prevent (testicular cancer) is much more rare than the types of cancers that are found in higher numbers in neutered dogs (lymphoma and hemangiosarcoma.)
Neutering is most commonly done in young dogs to prevent pet overpopulation; dogs that are not neutered are more likely to escape and breed.
Does My Dog’s Routine Need to Change After a Neuter?
Your dog only needs to have a different routine for a few days while his sutures are closing. In those first few weeks, he cannot jump around like normal and may even need to be confined so he does not run a lot in the yard. Some dogs will need a special collar so that they do not lick the sutures all the time.
Will Neutering My Older Dog Change His Personality?
In some cases, it can. Some dogs are less likely to have negative behaviors like marking territory and wandering. However, there is new research that shows that dogs are more likely to have nervous OCD-type behaviors and some types of aggression after a neuter.
My Recommendation: Delay the Neuter
My personal feeling is that in your situation, you should delay this surgery. Although it is unusual, some adult dogs do have negative personality changes secondary to the anxiety related to this event. No one can guarantee that a mellow dog will not change.
If you bring your new Golden home and it turns out that he has behavioral problems that can be treated with neutering (like wandering off), then you can have him neutered at that time. If he does not, and you are happy with his attitude around your house, I think he is best off left alone, as there are poor medical reasons to have him neutered.
The only medical reason to have him neutered is if he develops an enlarged prostate later in life. It is rare and certainly not anything to worry about. He could be neutered at that time if that were the case.
Sources
- Redondo JI, Otero PE, Martínez-Taboada F, Doménech L, Hernández-Magaña EZ, Viscasillas J. Anaesthetic mortality in dogs: A worldwide analysis and risk assessment. Vet Rec. 2024 Jul 6;195(1):e3604. doi: 10.1002/vetr.3604. Epub 2023 Nov 13. PMID: 37953683. i.nlm.nih.gov/37953683/
- Bastan I. Possible relationship between long-term post neutering complications in dogs and caregiver burden in the owners. Front Vet Sci. 2025 Jan 17;12:1532039. doi: 10.3389/fvets.2025.1532039. PMID: 39896845; PMCID: PMC11782161. i.nlm.nih.gov/articles/PMC11782161/
- Hart BL, Hart LA, Thigpen AP, Willits NH. Long-term health effects of neutering dogs: comparison of Labrador Retrievers with Golden Retrievers. PLoS One. 2014 Jul 14;9(7):e102241. doi: 10.1371/journal.pone.0102241. PMID: 25020045; PMCID: PMC4096726. i.nlm.nih.gov/articles/PMC4096726/
