Do you know that you shed your hair daily? similarly, all animals shed hair. The process of hair growth and shedding is very normal. Thus even Dogs shed their hair as we humans do. Sometimes Dogs undergo excessive shedding along with seasonal changes. Why do you wear a winter coat during cold winters? and why do you take off your coat during hot summers? Similarly, a dog’s fur is like your thick winter coat which helps to regulate its body temperature with respect to the external surroundings.