Weeks ago the leg of my 5 years old boxer was very swollen and he even walked a little limp, time later a kind of wound was formed and until today it has not been removed.
Thought my dog does not complain about anything, does not cry, or anything, keeps eating well, runs without any problem now, and everything normal. Although from time to time I've noticed that he licks his leg.
What could it be? Is it a disease? Could it be dangerous, contagious, ... ?
Should I take him to the vet?
Or will it heal with the passage of time?
Thank you in advance for your help.
Here is the picture (apologies if it looks really bad)
Update
I know you have mention in the answers to take my dog to the veterinarian and I do really want to take him asap but vet is on vacations and won't be here until January. So please tell me what can I do to help my dog for now? Should I bandage his leg? Something else?
I took him other photos recently. Does it looks better? Please help me
2nd update
I luckily could contact the current vet and told me it is a skin fungal infection. And vet recommended a cream.