My lil boy Dallas is a 5 1/2 year old choc lab. I have noticed in the last couple of days small drops of blood where he was sitting. Is this something I should be concerned about. My wife says it might be hemi's although we see no straining. He also has a foul poop like smell coming from his mouth. He is not the kind of dogs that eats poop, he is strictly the run outside, do my stuff and run back in. He has been a very healthy pure breed lab, had surgery last year for a fatty cyst and has another one developing but no major jhealth issues. Love my boy and would appreciate any advise or suggestions