Biology

Do lobsters have a heart? A lobster does not have a complex circulatory system like we do. Instead of a four-chambered heart it has a single-chambered sac that consists of muscles and several openings called ostia. Their heart lies above the stomach on the upper surface of the animal (but still below the carapace of … Read more

What phylum does a dog belong to? Read more on www.itis.gov One of the most cherished and well-liked pet species worldwide is the dog. They are renowned for their devotion to their owners as well as for their intellect and loyalty. However, did you ever stop to consider which phylum a dog belongs to? Chordata, … Read more