Great for entertainment and slowing down greedy cats!
My friend has dubbed this 'the goblet of fire'. Have had it for a while but Claude has recently taking to eating so fast he makes himself ill so this is where his dinners are going to get served from now on. Yes, the hole at the top is too large (or just right, depending on how you look at it... like if you're a cat and your head fits through it to gobble straight out of the top) but like the reviewer above I simply got something that fitted into/over the hole.
Also, for clever cats, you can rotate the plates on each level to reduce the size available for the treats to fall through, increasing the difficulty.