A panda’s thumb is actually an enlarged wrist bone that has evolved to allow the panda to hold onto its favorite foods - FACT, its favorite food is bamboo

If all frog eggs survived and became froglets, the world would be knee-deep in frogs within 100 years - FICTION; because of evolution, many animals lay hundred of eggs each year to ensure that even a few reach adulthood; if all froglets survived, the world would be knee-deep in frogs within 10 years

Hiccups may date back to humans’ watery ancestors - FACT, wiring in the brain that pushes water over fish gills and makes amphibians gulp air has been imperfectly wired in mammals; it can make the diaphragm go into spasms, causing hiccups

Scientists believe that wisdom teeth and the appendix are leftover equipment from when humans ate a primarily fish-based diet - FICTION, wisdom teeth and appendix are assumed to be leftover equipment from when humans ate a primarily leaf-based diet

“Junk DNA” refers to regions of DNA that are noncoding (meaning they do not code for a protein); in the human genome, 98% of DNA is noncoding - FACT

The platypus is the only mammal to have no relation to reptiles - FICTION, the platypus is the earliest mammal offshoot from reptiles; they lay eggs but produce milk like other mammals. They have also evolved the ability to produce venom independently of its reptile ancestors

One study found that men who were hungry preferred women with higher body weights - FACT, researchers suspect that this happens due to an evolutionary response to resource scarcity (a heavier woman advertises access to more resources, such as food)