It's akin to vomit i.e. to bring up food in the stomach back to the mouth cavity or out of the body entirely. Whereas humans vomit to get rid of bad food, other animals regurgitate as part of normal digestion. For example, cows 'chew the cud'.
no
eating do do
Strong winds can create waves larger than normal.
Regurgitation is a normal act for parrots. It is how they feed their young. Parrots will regurgitate their partially digested food for their chicks.
If you exercise a lot, it should be totally normal to have larger muscles.
They would lack normal eating habits.
Larger than normal.
It is completely normal for one testical to be larger and hang lower than the other - it is typically the left one.
yes
no
it is normal because when you eat, you could be eating too fast or eating too much or eating stuff that doesn't agree with your stomache. although, when you're not eating and still cramping, you should see a doctor.