A number of MonoTouch.UIKit.UIDynamicBehaviors are associated with a MonoTouch.UIKit.UIDynamicAnimator, which is responsible for the overall context. Any given MonoTouch.UIKit.UIDynamicBehavior is associated with some amount of MonoTouch.UIKit.IUIDynamicItems (such as MonoTouch.UIKit.UIViews and MonoTouch.UIKit.UICollectionViewLayoutAttributes); most subclasses of MonoTouch.UIKit.UIDynamicBehavior expose these in an Items property or application developers can retrieve them with UIDynamicAnimator.GetDynamicItems.

There are a number of predefined subclasses of MonoTouch.UIKit.UIDynamicBehavior:

Subclass	Behavior
MonoTouch.UIKit.UIAttachmentBehavior	Attachment: Specifies a dynamic connection between two MonoTouch.UIKit.IUIDynamicItems or between a MonoTouch.UIKit.IUIDynamicItem and a fixed point.
MonoTouch.UIKit.UICollisionBehavior	Collision: Detects when the boundaries of a MonoTouch.UIKit.IUIDynamicItem meet another boundary.
MonoTouch.UIKit.UIGravityBehavior	Gravity: Accelerates the MonoTouch.UIKit.IUIDynamicItem towards the bottom of the screen.
MonoTouch.UIKit.UIDynamicItemBehavior	Animation: Specifies an animation configuration to apply to one or more MonoTouch.UIKit.IUIDynamicItems.
MonoTouch.UIKit.UIPushBehavior	Pushing: Applies a continuous or instantaneous force vector to a MonoTouch.UIKit.IUIDynamicItem.
MonoTouch.UIKit.UISnapBehavior	Snapping: Specifies a magnetism-like attraction between a MonoTouch.UIKit.IUIDynamicItem and a fixed point. Includes a rebounding effect.