Cerebral blood flow (CBF) is the blood supply to the brain in a given period of time.In an adult, CBF is typically 750 millilitres per minute or 15% of the cardiac output.This equates to an average perfusion of 50 to 54 millilitres of blood per 100 grams of brain tissue per minute. CBF is tightly regulated to meet the brain's metabolic demands.oo little blood flow (ischemia) results if blood flow to the brain is below 18 to 20 ml per 100 g per minute, and tissue death occurs if flow dips below 8 to 10 ml per 100 g per minute.
Ears back often means the dog is being submissive or even a little fearful. The situation you describe sounds like a dog that is trying to appease you. You are a little scary to her. Try approaching her sideways, in a crouched position rather than hovering over her.
I am told that it gets its name because at the point where the ear folds the creases look vaguely like the shape of a rose viewed from above. Whippets and Bulldogs also show this kind of ear. Hopefully these descriptions will allow you to label and identify the shape of your dog's ears.nother example of a breed with folded ears is the Field Spaniel. V shaped ear in a Visla. Sometimes dog people do take the shape of a pendant ear into account as in the V-Shaped Ear which he usually refers to a medium length triangular drop ear as on this Vizsla. Similar shaped ears can be seen on the Bullmastiff.