No. No need for a coma with this sentence. You forgot some ' though. Should be-Mervin's dog wags it's tail when it gets a bone.
Sometimes but if one uses a comma in a question here it gets automatically removed. Yes, while I am answering this question, you will be reading the answer. This is an example sentence.
What happens when chicken bone gets stuck in gas tank
How angry Hera gets! This is an exclamatory sentence.
A wishbone is a bone that is found in a chicken and turkey. People use the bone to make a wish. Two people hold one side of the bone and whoever gets the smaller piece of bone is the winner and gets to make a wish.
they get hurt
It is called dislocation
Exclamation.
yes
its when a mans penis gets larger and hard
it doesnt fly
The joint has been dislocated.
The cannon bone of a horse's leg is affected when they get bucked shins.