A guy in Argentina couldn’t.
http://www.petmd.com/news/strange-but-true/man-buys-toy-poodles-learns-they’re-ferrets-steroids
There’s a video of the local strory in Buenos Aires at the bottom of the link, with more pictures of the ferrets roided up and with fluffed up hair…but they still look like ferrets.
Apparently toy poodles are in high demand in latin America and elsewhere and go for about $1,000 a piece. Guy bought the roided ferrets for $150 a piece thinking he was getting a great deal. Guess you get what you pay for.