Answers: 1.Circulatory system-pumping blood to and from the body and lungs with the heart 2.Digestive system-digestion and processing food with salivary glands, esophagus, stomach, liver, gallbladder, pancreas, intestines, rectum, and anus.
During the tie, the male turns around so the dogs are back to back and can defend themselves. The tie typically lasts 20 to 40 minutes. It may be just a few minutes, and dogs can mate successfully without becoming tied at all. The evolutionary reason for the tie is unknown, but it's assumed that if a male dog is tied to a female, it prevents other males mating with her. Unwanted Mating.
The cord should be severed so as to leave a half an inch section attached to the puppy. Tie the severed end of the cord with a clean piece of dental floss or thread in order to prevent bleeding. After a time, dip the end of the cord in a shallow dish of Iodine to prevent infection. Learn more about Dogs