The trixie stand up egg with feathers sound has been designed to activate your cats natural hunting and playing instincts the innovative dome is shaped like an egg and spins uncontrollably toppling and turning as soon as it is touched and causing the feathers attached to the end to fly enticingly around thanks to its low centre of gravity the trixie stand up egg never falls over and always rights itself there is a microchip inside the toy that can be activated to produce a bird tweeting