Hi. I am a great dog lover. I often work actively to improve the condition of street dog's near my house and also to save their lives. But I get badly disturbed by their deaths. I have noticed the death of 3 pups this year. The mother of those pups seems to be pregnant again. I being their sole savior in my colony wont the mother to get aborted. I know it is a wrong to do but you can understand my condition as I am just 18 and at this age nothing can be more important than my studies. So are there any safe pills which can be given to the female to avoid her pregnancy. (need a help from you doc A. S. A. P, I wont be able to handle any further traumas; prevention are better than cure)