You close the front door and every toy in the house lies still until you're back. Not this one. A paw bats it, it lights up and rolls away with its tail whipping behind, and the chase starts without you. This motion activated rolling ball toy wakes the moment your pet touches it, then rolls off with a rope tail trailing behind, so there's something to chase, pounce on and carry while the house is empty. Touch wake, three modes and auto shutoff: Wakes at a touch: it goes to standby after five minutes of quiet and starts again when nudged, so it isn't draining the battery in an empty room Rope tail: a knotted cord trails behind the ball, so there's something to pounce on, carry and tug when the rolling stops Three modes: a short press switches between fast, slow and interactive, so a kitten and a beagle each get a pace they can catch Finds a way around: sensors turn it away from walls and furniture, so it doesn't sit stuck under the sofa Shuts itself off: after thirty minutes of play it powers down, so it isn't still rolling at midnight It charges over USB. About thirty minutes on the cable and it's ready. Long press to turn on, and the red light blinks when it needs charging. Snap the shell and twist the tail. The ball sits inside a clear shell. Align the halves, snap them together, push the rope in and twist to tighten, and the tail is on. Seven colors: red, green, gray, purple, Tiffany blue, yellow and pink, each with a matching rope tail. Getting the size right One size: the silicone ball is 2.4 in (6 cm) across, 2.8 in (7 cm) tall with the shell on, and weighs 2.6 oz (75 g). That's sized for cats and small to medium dogs rather than for a large breed. Specifications Material: PC shell, silicone ball, rope tail Size: 2.4 in (6 cm) wide, 2.8 in (7 cm) tall with shell, 2.6 oz (75 g) Modes: Fast, slow, interactive, plus LED light Power: USB rechargeable, about 30 minutes to charge Auto: Standby after 5 minutes, off after 30 minutes Suitable for: Cats and small to medium dogs, indoors Safety note: Made for chasing, not chewing. Supervise strong chewers and retire the toy if the shell cracks or the rope frays. Charge it, snap the shell on, and leave it on the living room floor. One nudge and there's a game going while you're out.