Fifteen Unarmed Buffaloes Killed After Escape From Upstate New York Farm

[From article]
They escaped Thursday from a farm across the Hudson River in the Rensselaer County town of Schodack. The owner believes they swam across the river to the town of Bethlehem, where they wandered across a busy stretch of Interstate 87 and into neighboring Coeymans.
[. . .]
Thomas Gallagher, a Cornell Cooperative Extension large animal expert who has worked with GEM and who consulted with authorities Friday, said tranquilizers are not effective against buffaloes because of their thick hides and doses need to be so high they are generally lethal.

http://nypost.com/2015/04/24/buffalo-herd-shot-and-killed-after-escaping-farm-near-albany/

15 escaped buffaloes slaughtered in ‘Wild, Wild West’ scene
By Associated Press
New York Post
April 24, 2015 | 5:02pm