It's not a usual sight to see these snakes in the park. However, nearly every day, I see rats running around. The red-tailed hawks are not so common anymore. It was reported that they were killed by eating poisoned rats. There's not a dull moment in Washington Square Park with mobs of NYU students, tourists, demonstrators, various "music" groups and such animal life.
Visitors should also be advised that the restroom facilities continue to be revolting and disgusting after many years of NYC & NYU neglect. It's taken nearly 5 years to complete the construction of new restroom facilities that still remain under construction.
By the way, free internet WiFi facilities are still not available as they have been made available at Bryant Park and some other public spaces in NYC.