Our 103rd Guinness ad is obviously a tie-in Guinness did with the Edinburgh Zoo, which makes sense since so many of the animals featured in their early advertising were zoo animals, and even often included a zookeeper, too. The animals in the first ad look more like they did in the iconic ads.
In the second, a different artist, named Price it appears, took a more cartoony approach, and while they’re the same aniumals, they don’t have the same look to them.