Unlucky Animals Used to Promote Art School
Pity the poor rabbit who's at the bottom of the food chain and whose foot is apparently only lucky to others. Feel the pain of a horse as it's put to work, raced or slaughtered for consumption by dogs and cats. Rage against genetic manipulation a turkey endures for your Thanksgiving dinner enjoyment because his wishbone sure doesn't work for him.
No, this isn't a PETA campaign. It's a campaign from KNARF for the School of Visual Arts that urges potential students not to rely on luck for a successful career but, rather, to take matters into their own hands and create their own future.
It's not so much a metaphorical stretch as it is, for better or worse, the acknowledgment we, as humans, have much more choice and control over our destiny than do animals. See two additional versions of the ad here and here.