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Most dogs go into a estrous cycle within about 6 monthes of age some up to about 14 monthes of age. Dog's estrous cycle usually lasts three weeks, meaning she can get pregnant in that timeframe Dogs go into heat about 2 times a year, some up to 4 times a year

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15y ago
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12y ago

The female dog starts to go in to heat at 4-12 months.

My Boxer is 2 1/2 years old and has just went onto heat for the first time, and I'm not sure why this is the first time.

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13y ago

A female dog goes through it's first heat when it is about 6-9 months old.

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12y ago

Usually between six months and a year old, but it is different for each dog.

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Q: How old are dogs when they first go in heat?
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Related questions

How old are dogs when they go in heat the second time?

they are a year to a year and half when they go in heat for the second time.


How old are dogs when they are in heat?

All depends on the dog, ask your vet Typically from four to six months of age.


When do male beagle dogs go into heat and do they go into heat with another male dog?

Male dogs can not go into heat.


When do female Newfoundland dogs go into heat?

I have a female Newfoundland and she just went into heat right at 6 months old.


After heat do a dogs nipples go back to normal?

do dogs tits go back to normal after heat


How soon after birth do dogs go in heat?

After birth, dogs go on heat between 5-0 months


What age do puppies have their first heat cycle?

It depends on the dog but usually they go into their first somewhere in between 6 months and one year. There are other factors that play into that though, such as if you have her around other dogs that can cause her to go into heat more often.


How long after the first heat will dogs go into heat?

Usually it takes another 6 to 7 months.Females usually have 2 heats a year.


Can male dogs go int heat?

No, only female dogs can go into heat. Males can mate at any time of the year.


How long do male dogs go crazy in heat cycle?

Well, if your male is in heat, you either need to a": double check it's business, or b: call guiness book of world records, because only females go into heat


When does an English mastiff first go into heat?

My mastiff is 13 months old and she just started her first heat. The only sign was a few drops of blood on the floor when she stood up. Females will swell in that area as well. If there are male dogs around they might be much more interested in your dog than usual.


At what age does a male min pin go on heat?

You need to wait until they come into heat there second time. It is normally when they are around a year old