Answer:
You feel this sensation when you are dehydrated.
What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?
How many months of the year have 28 days?
What ends in E, starts with E and has a letter inside it?
It has the biggest wall and is also used when drinking tea.
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.