knock...

ian get knock on his forehead again during his end of day walk yesterday. this boy always knock here and there. his legs are full of bruises. but this knock is with scar. normally he just get swell due to the knock. this time he knocks on a rough surface and get some cuts. it bleeds a bit and leave some scar on his forehead. really heartache to see him with all the swell, cuts etc. are we (is always me since i spend more time with him) too careless or he is too clumsy?