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The Daily Insight

Do neutered dogs get along with unneutered dogs?

Author

Sarah Garza

Updated on May 08, 2026

There are many, many folks with multiple male dogs who will testify that this normally is not a problem. The key of course is they are neutered males. Sometimes even unneutered males can get along, but if you are getting a rescue it will undoubtable be neutered.

Accordingly, are neutered dogs aggressive towards unneutered dogs?

Neutered males smell like females. The scent of an intact male cause many neutered to react negatively toward them since intact males smell male. While neutering isn't known to affect the behavior or personality of the dog it can have a profound impact on the way neutered males perceive their intact counterparts.

Also, do neutered male dogs get along? A neutered male is as nice as a companion dog as any female. The key of course is they are neutered males. Sometimes even unneutered males can get along, but if you are getting a rescue it will undoubtable be neutered.

Thereof, do unneutered dogs fight?

A: Fights involving unneutered male dogs aren't uncommon, and with Wishbone and Jonesy both being intact, you've got double trouble.

Does neutering male dogs stop them from fighting?

In male dogs, the hormone testosterone may facilitate inter-dog aggression. Once spayed and neutered, dogs prone to inter-dog aggression may no longer fight due to hormones, but they may still viciously fight for other reasons that we will examine below.

Related Question Answers

What is the best age to neuter a male dog?

The suggested guideline for males is neutering beyond 6 months of age. Given the increased cancer risk for females spayed at a year of age, the suggested guideline is delaying spaying until beyond 2 years of age.

Will my dog hate me if I neuter him?

Neutering your dog will not affect his temperament in terms of happy or sad. Neutering him will not upset the dog because he no longer has a heavy scrotal sac dragging behind him. Most dogs don't even notice the change even right after surgery.

Is 2 years old too late to neuter a dog?

There is no upper age limit. Male dogs can be neutered from around five to six months old although the exact age varies depending on their breed, so speak to your vet – but don't leave it too late otherwise the benefits associated with neutering start to reduce. There is also no upper age limit.

Can you keep two unneutered male dogs together?

Introducing two un-neutered males to each other

Unless both dogs are very small, the chances of your being able to effectively handle a meeting on your own if something goes wrong are slim, and so having someone to help you and be responsible for one of the dogs is highly recommended.

Can dogs tell if other dogs are neutered?

Some dog owners are often puzzled by the fact that their dog is aggressive towards intact males. Often, these are neutered dogs who do well with all other dogs except for those with that little extra detail; they haven't been neutered. The truth is, dogs simply know and don't need to ask or look.

Why is my dog more aggressive after being neutered?

This might be an evolutionary hang-over from having to fight for mates, but whatever the reason, the threshold for initiating an aggressive act becomes lower the higher the dog's testosterone level is. So, an entire dog is more likely to respond to annoyance or frustration by snapping than a neutered one is.

Can dogs be friends after a fight?

If it takes 3o minutes, so be it. If the dogs become calm after a fight they can move on and be fine. If dogs are separated after a fight and not calmed down first, they get stuck in a fight state of mind towards the other dog and it gets really bad. Do: Once they are calm you are going to let them back together.

Is it too late to neuter a dog?

There is no upper age limit. Male dogs can be neutered from around five to six months old although the exact age varies depending on their breed, so speak to your vet – but don't leave it too late otherwise the benefits associated with neutering start to reduce. There is also no upper age limit.

Will dogs fight to the death?

Dogs can do serious harm to each other during a fight or attack. In some cases, the injuries can even lead to death. When it's your dog that's involved, it's hard to resist the natural instinct to jump in and stop a fight.

What happens if you don't fix male dog?

And one of those is that male dogs can be very aggressive. By not neutering your dog, they will produce a lot more testosterone, which can exacerbate aggressive tendencies, especially if your pup is alpha in nature. Excessive testosterone can be dangerous for a domesticated dog.

How can you tell if your dog is sexually frustrated?

Pulling/dragging of handler outdoors; excessive sniffing; licking female urine. Sexual frustration; excessive grooming of genital area. Sexual excitement when petted. Offensive growling, snapping, biting, mounting people and objects.

Why dogs should not be neutered?

#2: Hormonal disruption in neutered male dogs heighten the risks of other growth centers. Neutering may triple the risk of hypothyroidism. #3: Early neutering of male dogs increases the risk of developing bone cancer. Osteosarcoma is a common cancer in medium/large and larger breeds with a poor prognosis.

How do unneutered dogs act?

Undesirable Behaviors with Unneutered Male Dogs

Possessive/overprotective of food and toys. Unwillingness to obey commands; refusal to come when called; pulling on leash. Barking or lunging at passersby; fighting with other dogs. Pacing, whining, unable to settle down; door dashing, jumping, roaming, howling.

Is having two male dogs a good idea?

For starters, Phifer tells WebMD that there are no set rules about good dog matches because all dogs - even within the same breed - are individuals. So it's not necessarily true that female dogs match well with male dogs, younger dogs or older dogs make better second dogs, or that two puppies always do well together.

Will 2 male dogs fight?

In neutered males and in females the sex does not necessarily make them prone to fight. It is true that if you have two male intact (unaltered) dogs the hormones in the dogs may cause them to be prone to fighting, but that is because it causes them to be more dominant.

Is it better to have 2 dogs?

When you have two dogs, they provide each other with companionship and both mental and physical stimulation. All of that can help avoid some obedience issues that happen when you have a single dog left home alone.

How can two male dogs get along?

How to Get Two Male Dogs to Get Along
  1. Neuter your boy -- or boys, if both are yours. Talk to your vet about the best age to do it, if your puppy is young.
  2. Let the dogs figure out who's the alpha. Although you should be the leader of the pack, the pups will still battle it out for position No.
  3. Respect whatever order they've chosen.
  4. Socialize your dogs.

Why are my 2 male dogs fighting?

Dogs usually fight because they are stressed. The dog isn't normally aggressive, but when stressed, its demeanor changes, just like with humans.

What do you do when two male dogs fight?

How to Get Two Male Dogs to Get Along
  1. Spay both dogs to remove aggressive tendencies fueled by hormones.
  2. Do not allow the dogs any unsupervised time together where they can begin fighting.
  3. Remove any toys that they fight over immediately when the problem begins, giving both dogs a firm "no!" and separate them.

Will castrating a dog calm it down?

If your dog's hyperactive behaviour is also down to hormones, then neutering should help. A lot of owners find their dog chills out more after being neutered whether they're male or female. Neutering your dog will only do so much to calm them down – the rest is up to you.