You may have already seen this story  about the animals in the Zürich Zoo being fed frozen meat and fruit "alternative ice cream" to cool them down. It seems that this isn't so uncommon. 20 Minuten, a free paper that's distributed in Zürich and other Swiss cities, has a great slide show on their web site  of animals cooling down, using ice treats and other ways.
Everyone say awwwww... (or in Swiss-German - yööööö)
Go to this page  and click on the Bildstrecke starten link below the tiger to see the whole slideshow. Warning: you may faint from the cuteness overload!
(This isn't about human food but I just couldn't pass it up. Besides...the ice treats look kind of good!)