Proper credit for penguins: credit cards and poo

Here are two drawing of penguins.

One drawing is part of an ad for a credit card offered by CIBC, with the slogan “Unleash your sense of adventure. Aventura. The Traveller’s Travel Card.™”

The other drawing is from the Ig Nobel Prize-winning biology research study “Pressures Produced When Penguins Pooh — Calculations on Avian Defaecation,” published in the journal Polar Biology, vol. 27, 2003, pp. 56-8.

Can you tell which drawing is which?

(Thanks to Jillian Buriak for bringing this to our attention.)