Wandering delirious with her dog through the groves of Ute Valley Park, a woman pale and sweating came across a group of people on a path. They would be her saviors. Her ankle was swollen and marked by two small punctures from a rattlesnake's fangs. The woman, who has not been publicly identified, was the second in three days to be bitten by a venomous snake in the city's parks - signaling that snakes are beginning to emerge en masse from their winter dens. Dr.