Embodiments disclosed herein include devices for time release of measured quantities of an active ingredient and storage of animal management information. One embodiment disclosed herein releases an active ingredient, and then, at optionally varied intervals, releases additional doses into the same environment. The active ingredients are compartmentalized and, upon receiving an appropriate signal, open to dispense the active ingredient into the animal. Accordingly, in one embodiment, a device includes an engagement member to move a cap to dispense the active ingredient, and in another embodiment, includes a pellet that is attached to the cap to move the cap and dispense the active ingredient.
