This would be very uncommon - 4 months is quite young for a male to be fertile enough to impregnate a female.
as soon as she comes back in heat.....usually bout 44 years
Yes, as long as the chihuahua is "in heat" and they get "hung" (which you will know), the pug can get the chihuahua pregnant.
No.
My 6 year old chihuahua is pregnant by a 6 month old chihuahua. The vet said that the pups may not survive after birth.
About six months.
No it is not normal for chihuahua to eat its puppies at birth
No.
yes
Then you are pregnant. Birth control pills will not have major side effects on the fetus, but it is best to stop taking them as soon as you know you are pregnant.
I don't see how it concerns the chihuahua
straight away, my cat did the same. animals are diffrent to people. :)
You can become pregnant quite soon after having a baby. Sometimes in as little a month, but that may also be dependant on how soon after giving birth Mum is to resuming normal sexual activity.