this book is helpfull for the people engaging in the field of veterinary research perticularly in the field of canine medicine. due to mismating the bitches were subjected to the danger of abortion but with the help of contraceptive one can prevent the possibility of abortion as well as life of the animal. the contraceptives have many side effects and some time there is economic losses . the herbal product act as contraceptive as well as not induce any side effects in bitches and thats why it is very usefull in the era of contraceptives.