Waddling around the perimeter of a prison in Brazil's southern state of Santa Catarina, geese have edged out their canine predecessors on patrols to make sure inmates do not escape. "We have electronic surveillance, in-person surveillance ... and finally the surveillance of the geese, which replaced the dogs," said prison director Marcos Roberto de Souza. Souza said tending the flock of geese is more affordable than raising dogs and that the quiet location of the prison makes it a viable option for his facility.