well yesterday i was petting flint (2yr old husky/lab) and noticed he has crusty lumps on his back from his neck to his tail. id estimate 20 of them or so. they are a little red and have a yellowish crust on them, they are about the size of your average human pimple. i did find one spot that looked like it opened up and was an open sore so i put some neosporine on it. he doesnt seem to be in any pain except when i started spreading fur to take a closer look and even then he just looked as if he was interested as well. im going to make a vet appointment tomorrow but i was wondering if this was something i should be more concerned about and make an emergency visit. thanks in advance.