Meaning: The animals were moving around freely in the forest.
Choice of Words: Roamed means "moved around freely."
Alternative Expressions
The creatures moved about as they wished in the woods.
Meaning: This means the same as the first sentence, but it uses different words to describe the same idea.
Choice of Words:Creatures is another word for animals. Moved about means to travel or roam around. As they wished means that they were free to move however they wanted. Woods is another word for forest.
In the forest, the animals wandered as they pleased.
Meaning: This means the same as the first two sentences, but it uses the word "wandered" to describe how the animals were moving.
Choice of Words:Wandered means to walk or move around without a specific destination. As they pleased means that they were free to move however they wanted.