mbu puffer fish munching on a ROCK!? (lol must watch!)

[Ayeeepowlow]

i just finished aquascaping my tank with pebbles and my mbu puffer stairs at this rock thinking its a snail and attacks it!! i really need to get more snails lol priceless!!!
[YT]CuWFTVmKMwQ[/YT]

 

[Ayeeepowlow]

ok..guess..not.. -.-

 

[Fat Homer]

I've heard of MBU's doing this before... but can i suggest adding some decor in your tank, as puffers get bored REAL EASY...