No, anybody can have an imagination....

My dog was restless and wouldn't lay down after he had (unsuccessfully) chased a rabbit. When he went to sleep, he was twitching a lot, as he does when he sleeps after excitement. (Being a greyhound, sleeping is never an issue....)

So he was dreaming about the rabbit in all probability, and his restlessness beforehand was thinking about the rabbit.

When you are about to be put under general anaesthetic for an operation, most people, me included, think about what if you don't come through? No wonder people say they thought about heaven or whatever your mind thinks comes next.