On this thought a little background ...
the thought that happened is ... shut tight as a clam.
Does anyone suppose nearly all other creatures, on Earth, were given 'legs', feet and hands to pull the stuff out of the clam clamped tightly shut for a purpose other than eating?
We used to use clams (muscles, really) as bait so fish must eat them, and they don't have legs or hands.
Wait - what was the question again?
No.