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.
The one in the middle is a 'fluffy' and his ear type is often seen with the longer coat. Many cardigan puppy's ears will naturally be soft and not stand up until they are between 12-16 weeks old or even a little longer.Don't give up if ears don't stay up at first after the tape is removed. Put the tape on for a few days, then let the ears rest for a few days and repeat again if they still aren't up.Ears can be up one day and down again the next or a puppy can have one ear up and the other ear down or out to the side.This is most common during teething. A tired puppy can also have droopy ears and you might see ears held up better after a nap.ars can be up one day and down again the next or a puppy can have one ear up and the other ear down or out to the side. This is most common during teething. A tired puppy can also have droopy ears and you might see ears held up better after a nap.