The Dog Says Wang Wang

In the same spirit as The Sneeze' Global Schoolyard Rhyme Project, the Department of Linguistics at Georgetown University has created Sounds of the World's Animals, a reader-submitted collection of the various ways people make animal sounds in different languages. The database is organized by language and by animal for all your international animal sounds needs. I think the best variety was the dog's bark. Check out how some languages are woofing:

Afrikaans: woef
Albanian: ham ham/hum hum
Arabic (Algeria): haw haw
Bengali: ghaue-ghaue
Catalan: bup, bup
Chinese (Mandarin): wang wang
Croatian: vau-vau
Danish: vov
Dutch: woef
English: bow wow, arf, woof, ruff ruff
English (Old English): Hund byrcð.
Esperanto: boj
Estonian: auh
Finnish: hau hau/vuh vuh
French: ouah ouah
German: wau wau, wuff wuff
Greek: gav
Hebrew: haw haw/hav hav
Hindi: bho-bho
Hungarian: vau-vau
Icelandic: voff
Indonesian: gonggong
Italian: bau bau
Japanese: wanwan, kyankyan
Korean: mung-mung/wang-wang
Norwegian: voff/vov-vov
Polish: hau hau
Portuguese (Portugal): au au au (nasal diphthong)
Portuguese (Brazil): au-au
Russian: gav-gav
Slovene: hov-hov
Spanish (Spain, Argentina): guau guau
Swedish: vov vov
Thai: hoang hoang (with falling tone)
Turkish: hav hav
Ukrainian: haf-haf
Vietnamese: wau wau