Those appear to be the hawk moth caterpillar, also called the frangipani moth caterpillar. They are similar to the azalea caterpillar and are heavy feeders. Those moths are similar to the sphinx moths that I see in the fall and are hummingbird size.
drdawg (Dr. Kenneth Ramsey)
The reason it's so hard to lose weight when you get up in age is because your body and your fat have become good friends.