What kind of young animal?

Young animals differ more than adults do. A fledgling on the ground is fine; a nestling on the ground is not.

• RabbitCottontail. Often found when a nest is mown or a dog digs.
• BirdAny bird not yet flying well.
• SquirrelFallen from a nest or a felled tree.
• OpossumAlone, or found on or near a dead adult.
• DeerA fawn lying still in cover.
• TurtleHatchling crossing open ground.
• Something else, or I cannot tellDescribe it to a rehabilitator instead.