they are fast...
I estimate the average dog hauling a$$ is going a mere 30mph, but that does me no good... so I convert to fps
30mph... being, mph*1.46=ft/s... 30mph = 43.8fps
now its simple to have this figured out with your own load data... for example, your shooting 95gr bullets @ 3250fps. you call in a dog, he sees you, takes off running @ 90 degrees from you, @ about 44fps @ 100M (328ft) 328X44=14432 14432/3250=4.4ft is what you would have to lead that running yote.
thats only @ 100M so imagine a dog going a full blown 30mph @ a quarter mile, you gonna be able to fit that lead in your optics FOV??? better be zoomed all the way out and have some fine X hairs if ya plan on making that shot 
