Ears are very, very hard to get to heal -- they shake their heads frequently, and then shake off the scab and reopen the wound.
When mine had a small ear wound, the vet first first tried to glue it with surgical glue, as it was clean and tidy. That didn't work, as the dog promptly shook it open again the next day. It eventually took stitches to keep it closed. Then the vet techs pressed his ear against his head and made a bonnet out of tape to keep the ear secure and unshakeable. He had to wear that stupid-looking bonnet for over a week (at least 10 days, maybe 2 weeks). He also had to wear a cone all that time. For such a minor injury, it was a royal pain in the tush to get that dog healed up. I think he also had to be on a round of oral antibiotics, as it had been shaken open a few times.
Last edited by Magwart; 09-27-2015 at 07:21 PM.