They have to have thier first heat usally around 6-9 months but It would be best to wait until she has her second heat to breed her. Good Luck. Hope this helps.

Lime Green Is stomach acid that you are throwing up. You should see a doctor I Had that a lot before I Had my Gallbladder removed. Hope that helps . Good Luck.

They could be Mites of some sort. Or They could be Fleas if you have pets. Or If you just recently moved there the house could have already been infested.

NO They can not get preagnant at that age. Not until they have thier first heat. Around 7-9 months in Chihuahuas :)