Here you see the reason dentex are so highly regarded in europe
They seem to know the range of the gun the spearo is holding, and stay 50cm beyond that.
http://www.fisica.unile.it/~fasano/marco.dada/denticione.mpg
Also they are attracted by blue lips
They seem to know the range of the gun the spearo is holding, and stay 50cm beyond that.
http://www.fisica.unile.it/~fasano/marco.dada/denticione.mpg
Also they are attracted by blue lips