my 5 year old 3/4hound 1/4 collie bitch has developed a lump on her back left outside toe it feels soft and deep..when she runs it bleeds slightly.. i took her to the vet and he gave me an injection to give to her for a week and also blue spray.. the vet described it as being some type of ulcer but he couldnt define how she could have got it,. im just wondering have ye lads ever came across a lump on a dogs toe as i have described.. any info very much appreciate sound lads