I will have my vet look this over during our monthly heart worm pill. I'd just like a heads-up.
I adopted my 4 year old chi-terrier in mid August. He was barely 6 pounds then and is now an attractive sliender 8 pounds. Under his neck, the fine white fur is patched in one spot where a flat brown mole-like birthmark-looking thing has developed. I don't know if it's been there or if it's new because I may not have noticed it for 2 months. It doesn't itch or look dry and is smooth, slightly risen. What may have caused this? Can I prevent it? Is this a sign that my dog is older than 4 or is that the age he'd get moles??