This aumller ferret cat toy will make a delightful playmate for your cat the funny ferret is filled with silver vine leaves which cats find particularly stimulating the natural safe substance silver vine actinidia polygama also known as cat powder is made from the leaves of the non toxic matatabi plant the plant is part of the kiwi family and grows in the mountainous regions of japan and china it is known to induce a state of euphoria in cats in much the same way as catnip and bald