The series of bodily changes that occur in the female of most mammals from one period of estrus to another. The estrous cycle usually takes place during a specific period known as the breeding season, which ensures that the young are born at a time when the chance of survival is greatest.
ear-to-ear. It's about smiling. Ear-to-ear smile or grin is when you have a very broad and generous smile. Such a smile when each corner of your mouth is by each of your ears. Explain to me why you don't have an ear-to-ear grin right now.
Tips. 1  Don't poke and scratch inside your ear or you may get an ear infection. 2  Tilt your head to the ear facing down and jump up and down and gently pulling your earlobe. 3  Just chew gum when laying down on your side (side with water in ear). After couple of minutes all the water will be gone.