Nanny McFur

While there's certainly no truth to the myth that cats suck the air out of babies' lungs, a newborn does not have the capacity to turn over or even move her head at first. A heat-seeking cat who chooses to cuddle up close to the baby's face could make it difficult for the child to breathe. Close the door to the nursery when the baby is napping. If there is no door to close, either install a temporary screen door or place a crib tent over the crib to keep the cat out. ASPCA

Photo Source

Along with their straight-as-an-arrow strikes at the tree, which safeguards against head trauma, birds' bodies are designed to absorb the impact. One millisecond before a strike comes across the bill, dense muscles in the neck contract, and the bird closes its thick inner eyelid. Some of the force radiates down the neck muscles and protects the skull from a full blow. A compressible bone in the skull offers cushion, too. Meanwhile, the bird's closed eyelid shields the eye from any pieces of wood bouncing off the tree and holds the eyeball in place. Full story on Live Science