Rio Dog Carnival

Rio Dog Carnival

Christophe Simon /AFP via Getty Images

A woman holds her dog during the dog carnival in Copacabana beach, Rio de Janeiro. About half of Brazilian households have a dog, more than any other country, according to data tracker Euromonitor, and pet food sales there rose 10 percent to $5.6 billion last year, trailing only the U.S. and U.K. in the $71 billion worldwide market.