hello i was wondering if anyone has experienced this problem with their staffy, my mom has a 6 yr old bitch who was neutured 5 yrs ago she is very fit and well looked after but the problem is she passes blood from the back end she stoops as if she is going to poo but then a lot of blood will come out instead. she would be ok for a couple of months then it will start again and last for about a month, the blood is dark red, but mom is even more worried now as today the dog was walking and passing a lot of blood at the same time without the dog realising it was happening. she has been to vets for some months now and has had no end of tests including samples from the blood ect the last resort is opening her up to find out, which mom she doesnt paticulary want done. they can normally tell a few days before it happens as the dog goes quite and looks quite down. we are concerned that the vets are missing something serious, does anyone have this problem with their dog? thankyou