People pose with their disguised dogs during the "Blocao" dog carnival parade 

People pose with their disguised dogs during the "Blocao" dog carnival parade in Rio de Janeiro, Brazil, Sunday, Feb. 3, 2013. According to Rio's tourism office, Rio's street Carnival this year will consist of 492 block parties, attended by an estimated five million Carnival enthusiasts. (AP Photo/Silvia Izquierdo)
Associated Press
People pose with their disguised dogs during the "Blocao" dog carnival parade in Rio de Janeiro, Brazil, Sunday, Feb. 3, 2013. According to Rio's tourism office, Rio's street Carnival this year will consist of 492 block parties, attended by an estimated five million Carnival enthusiasts. (AP Photo/Silvia Izquierdo)
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