My 1 1/2 yr old neutered male is developing black spots on his nose and lips(center front and where his teeth touch the gums). Is this normal? An infection? Something to worry about? Also he lost his companion in Oct. He's lost weight but seems to have a good appitite but has gone thru small personality changes taking on some characteristics of his companion. Is he okay?
Sometimes it is normal for the skin pigment to change but b/c of the weight loss and behavior change, I recommend a visit to the vet. This could be an infection, neoplasia, or a normal change in color. Vetcare