The heart is comprised of 4 chambers. The upper is called the atria (plural) and the lower are the ventricles. Blood flows into the right atrium (singular), then is pumped into the right ventricle. The right ventricle continues the flow, pumping the blood into the lungs where it receives oxygen. From there, it flows into […]
A dog’s intelligence is generally measured by how quickly s/he learns. But this doesn’t mean that slow learners aren’t smart. And it doesn’t mean that the more clever a dog, the better pet s/he is. The average dog understands about 165 words and signals, intelligence equal to a 2 year old child. Smarter dogs have […]
