when going about it you have to do it in a smart way bud me id have asked if i could do the ferreting and then lamping i wouldn't have mentioned a dog unless he asked
http://www.ebay.co.uk/sch/i.html?_nkw=sling+shot+ammo&_sacat=0&LH_BIN=1&_dmpt=UK_BOI_Metalworking_Milling_Welding_Metalworking_Supplies_ET&_odkw=12mm+Steel+Ball+Bearings&_osacat=0&_trksid=p3286.c0.m270.l1313 try here
http://www.google.co.uk/search?q=Saluki/grey+x+Bull/greyhound&hl=en&client=opera&hs=v3L&rls=en&channel=suggest&prmd=imvnsfd&source=lnms&tbm=isch&ei=fFeITquPGuOV0QXpuLQJ&sa=X&oi=mode_link&ct=mode&cd=2&ved=0CBMQ_AUoAQ&biw=1440&bih=775
here you go bud