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My dog won't mount female in heat. Is he too inexperienced to mate?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Male | unneutered | 1 year and 6 months old

He won’t mate with my female chihuahua who is in heat? He snifffs her and follows her and seems interested but won’t mount her she’s dripping blood and her vagina is swollen I don’t think he knows how or what he’s doing could it be that my female chihuahua is one year older than him and that’s why he won’t mate with her? Does age matter to dogs?

1 Answer

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on April 19th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! No, age doesn't matter in the animal world. I can think of 2 reasons: 1) she isn't ready yet 2) he is inexperienced and doesn't know what to do. If this is the case you might miss this round. He'll eventually get it. I wish you the best!

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