Believe me pal ive seen enough to know what they are I had saluki bull greys for 15 year and only walked land never used motor for runnin the quarry to throw dog on top of it.... i had a saluki bull grey bitch probably best ill ever own but know for a fact most of em need a motor n loadsa juice to bend n bend n it might not be just bull x es but it mostly is and others used as "catch " dogs I know enough lads that just drive land cos ther dogs are too slow to walk land with