Why does my unneutered male dog act like my spayed female is in heat?
Updated On September 23rd, 2025
Why does my 3 1/2 year old unnuetered male bulldog keep acting towards my 8 1/2 year old spayed for 8 years female Bulldog like she's in heat? He keeps trying to mount her, he keeps sniffing her private parts, he's very insistent and dominant towards her lately and he just keeps acting like she's in heat and it's getting really hard to keep him off of her. He actually hurt her leg once trying to hold her down to mount her.
2 Answers
Most Helpful Answer
Published on November 8th, 2020
Since he is unneutered he may be picking up on her scent even if she is spayed, it's also a way to show dominance over other dogs. If you don't plan to breed him I suggest getting him neutered. This will help the behavior lessen over time and will also prevent some potential health problems as well as reduce the urge to roam and possibly get injured if he escapes looking for a female in heat. You can try getting him obedience training so he will be better behaved and more likely to listen when you try to separate them.
1Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on August 18th, 2018
Hi there. Male dogs do not have heat cycles like females dog. However, I see that Tiny is a young adult dog, only about a year old - so it's likely that he's just now becoming interested in females. So unfortunately, this behavior is likely to continue for quite some time. He may eventually calm down a bit when he's older, but it's going to be extremely frustrating for him in the meantime to live in the same household as an intact female. Unless you're planning to use him for breeding, I would recommend having him neutered - this is the easiest way to resolve the problem :)
1Pet Parents found this answer helpful
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