They can still die before that though so be careful and love your little doggie!
Chihuahua Heat Cycle
Female chihuahuas' sexual reproductive organs do not fully develop until they are approximately 6 months old. However, periods may begin as early as 3 months and as late as eighteen months. These cycles occur every six to nine months (also known as "periods" which for humans occur every 28-35 days). Peteducation.com explains that the four stages of the female heat cycle consists of (1) Proestrus (2) Estrus (3) Diestrus and (4) Anestrus.
Proestrus
During the stage of Proestrus, females typically do not engage in sexual intercourse. Her vagina becomes swollen (often her nipples become swollen as well). This stage lasts approximately four to eleven days. There is bloody discharge from the female's vagina which often attracts males, but she will typically not respond sexually to the male.
Estrus
During Estrus the female bleeds only slightly from the vagina and this stage only occurs for five to nine days. This is when conception CAN occur so if you are trying to help your Chi conceive, this is a critical time for you to find a male for her to engage with. During Estrus the female will be very receptive to male attention and will engage in sexual intercourse. If all goes well, the zygote will begin to mature.
Diestrus
Diestrus is a stage between when a female is no longer desires to engage sexually with males until the time of her pregnancy. If your chi was not able to conceive, she will still go through Diestrus (unfortunately). This stage lasts approximately 80 days.
Anestrus
Anestrus is the time period between heat cycles where your chi will have no physical signs of sexual reproduction capabilities (no bleeding, discharge, or nipple enlargement). This stage varies depending on how long other stages last.
Pregnancy
A chihuahua's pregnancy will last approximately 63 days. It is important to not only be sensitive during your chi's pregnancy, but to take her monthly to her vet in order to make sure that her pregnancy is going well. With such small dogs, there are often comlications. You also want to talk to your vet about c-sections as well as future possible emergency check-ups. You will be able to tell approximately 4-5 weeks after the intercourse with the male chihuahua that your chi has conceived if she has a clear mucous vaginal discharge as well as nipple swelling. You should also visit your vet for an ultrasound in order to insure normal heartbeats of your chi and her pups. A blood test is also available at your vet's office. Make sure that your chihuahua continues to exercise what should normally would if she were not pregnant and be sure to feed her premium adult dog food and a supplement for pregnant dogs (be careful not to oversupplement). During the last few weeks of her pregnancy she will begin lactating in order to prepare for the feeding of her pups. She will eat quite a bit more food than she normally does (3-5 times more than usual) so be aware of diet changes. Make sure that you set-up a comfortable (and private) place for her where she knows that she can give birth. Otherwise she may find a private place of her own such as behind the couch or in your closet!
Source: http://mynewchihuahua.com/chihuahuaheatcyclebreeding.htm
21 days all female dogs are in heat for 21 days and then after that it will be 5 to 7 month before she goes in to heat again
how long doew a chihuahua period last? My dog has been bleeding for two weeks
--------
female dogs don't have their period...if they are bleeding is probably because its in heat...my little chihuahua just got tht...thts why im telling you...it lasts 21 days....
if the chihuahuas are nice they can play with the cat. one time i had two chihuahuas and a cat and they played together. (im not sure what you ment when you say "Did chihuahuas can stay",sorry)
that can stay in the heat for like 10 to 20 days
Twice a year.
There are both long-haired and short-haired chihuahuas, so both.
Most all chihuahuas bark to much.
Some of them are the normal chihuahuas you see everywhere and the others are long haired chihuahuas.
chihuahuas can protect themselves by their speed,or hiding.It will probably hide but if it can't then it will snarl and will definitely not turn its back on its enemy
Twice a year.
Around 24 hours.
Chihuahuas are dogs. Not babies. Dogs should be loved of course but don't give them shoes. It looks silly. But if their feet start to blister from heat then yes, but only for that purpous.
Mexico.
72 inches