Piglets tremble when they sleep.

The piglet sleeps trembling, eats, in general. Pull, normal. What is it caused by? The ambient temperature should be low. -- Yes! The ambient temperature should be low! Like people, trembling is also pre-cold!-- somniloquy, perhaps? -it's probably congenital, and it's more obvious at birth. Can't adapt to the outside world-- somniloquy, perhaps? The mountain rover was published on 2009-5-19 00:32 with extraordinary imagination! Are you dreaming? Hehe, how can the upstairs have such a high imagination? -- you will tremble when you sleep cold, hehe!-- maybe it's a dream! Maybe it's a fly making trouble.