A couple traveling along the river in the area north of Rosario claimed having seen an animal being abducted by a flying saucer. 'Later, the both vanished,' they said. The likelyhood that cows could fly was always relegated to the province of the impossible. But to Sergio and Laura, this changed last Monday afternoon, when they traveled along the coast near Puerto Gaboto, and believed that they saw a cow in the sky, abducted by a UFO.