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I breed Chihuahuas for a living. It can happen at anytime but usually after they are a year old

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Q: How old does a chiuahhua have to be to go into heat the first time?
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First time dog goes into heat?

Usually between six months and a year old.


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 does great Pyrenees come into heat the first time?

depends on the breed of dog and age. on average about once every six months.


How old are labrador bitches when they first come on heat?

Any time from 6 months on is possible for a Labrador. Usually it is around 8 months of age.


How old are dogs when they first go in heat?

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


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.


How old can a dog be to have puppys?

Female dogs can get pregnant as soon as they have their first heat. But, breeding them on their first or even second heat IS NOT recommended. When a female can come into heat depends on the dog and size. Small dogs can come into heat rather quickly while large dogs can take up to a year or more.


Mares generally start comindg into heat when they are how old?

all mares are different and they will not all get their first heat or in season at the same time. if they are around a stallion or can hear or see one they tend to go into heat earlyer and more usually but if they are not they start getting it when they are around 3years


How old will a miniature schnauzer be before she starts her period?

Maybe like 3 months old. They start it all the time and its not called a period, its called 'in heat'. A female dog can start their in heat at any time.


Why hasn't my 16 month old boxer not had her first heat?

A 16 month old boxer that has not had her first heat may have some type of medical problem, such as an underactive thyroid. It is also possible that she has had a "silent heat," which means that she did come into heat but showed very few signs of it. A silent heat is very easy to miss but is perfectly normal.


How old is a pom chi when it first goes in heat?

Six To seven months


Should you breed your goat during her first heat?

It depends on her age and size when she has her first 'heat' normally it is best to wait until she is 10 to 12 months old.