Gray foxes have small ranges and commonly take advantage of whatever type of food is available at the time. Gray foxes are often more aggressive than red fox and an abundance of gray fox will prevent an abundance of red fox in the same habitat.The gray fox is often confused with the red fox because the gray has rusty-red fur on its ears, ruffs and neck.ray foxes have small ranges and commonly take advantage of whatever type of food is available at the time. Gray foxes are often more aggressive than red fox and an abundance of gray fox will prevent an abundance of red fox in the same habitat.