Heart Rate and Irregular Heartbeat in Dogs
You can determine the adequacy of your dog’s circulation and the presence or
absence of anemia by examining the gums and tongue. A deep pink
color is a sign of good circulation and a normal red blood cell volume. A pale
color indicates anemia. A gray or bluish tinge is a sign of insufficient oxygen
in the blood (called cyanosis). With severe circulatory collapse, the mucous
membranes are cool and gray. However, some dogs, such as Chows Chows, have
pigmented lips, gums, and even tongues. These will normally appear bluish,
purple, or even black all the time. Know what is normal for your dog.
The adequacy of the circulation can be tested by noting how long it takes
for the gums to “pink up” after being firmly pressed with a finger. This is
called capillary refill time. The normal response is one second or less. More
than two seconds suggests poor circulation. When the finger impression remains
pale for three seconds or longer, the dog is in shock.