The most common symptoms of mono are a high fever, a severe sore throat, swollen lymph nodes (sometimes called swollen glands) and tonsils, and weakness and fatigue. Symptoms usually start 4 to 6 weeks after you are exposed to the virus. Mono can cause the spleen to swell.
The death roll performs a number of functions for the Saltwater Crocodile. When it grabs very large prey the crocodile has to drag it into the water and drown it so the crocodile will use it's advantage in the water and it's own body weight to roll over and over again to drown it's prey.
it is when; the crocodile has grabed its prey using is jaw. It then basically does a sidewards roll several times still grabbing hold of its victim. It tends to do this more so in water than on land, or it is used to drag the victim in to the water. The prey has no chance of survival.