Should I worry about a black dot on my cat's neck after microchipping?

Poor Bella! No, this doesn't sound normal - usually, you shouldn't even notice the microchip site. Hair loss with redness and yellow fluid from the area can be associated with an infection or other problem, so I would recommend having Bella rechecked by your vet as soon as you are able to. She may need antibiotics and anti-inflammatory medication to treat the infection.

It does not look like post-injection reaction. I would rather suspect an insect bite, reaction to a tick, cat bite (if Ori goes out at all) or self-inflicted small wound from scratching the area. Please, keep an eye on it, small skin wounds often heal rapidly without treatment. If there is any discharge from the wound you can use 4% chlorhexidine skin solution to clean it. If it gets bigger or starts bothering Ori, take her to your local vets for a check.

Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question about Blazko. Poor boy. This could just be from an injury. Given there is no sign of infection, I'd monitor it for now. If it does appear infected (pus, redness, swelling, warmth to the touch), then I'd have him checked out by a vet. I hope this helps!

If you are referring to the small circlular dot on the skin in front of the opening to the ear, it is possible this is just a spot of pigment in the skin- like a freckle. I cannot tell for certain with a photo, but if the area is not raised or irritated that would be my suspicion. With ear mites or infection we see redness and discharge down inside the ear canal/ear hole. If it is a raised scab in that spot, and inside the ear hole looks clean and not red at all, it could just be a small wound. If you notice redness or discharge in the ear canal, an exam is needed. Or if your cat is scratching at the ears or shaking his head, he should be examined.

It's good that the area has stopped bleeding. I would keep an eye on it for now. I would gently clean the wound with warm water and antiseptic soap. Keep the wound clean and dry, and monitor it for signs of infection. If you see redness, swelling, warmth to the touch, or pus, then it is infected and Nick will need to see the vet for antibiotics to treat it. I hope this helps!

From what I can see, it looks like a small scar. If it's not swollen, has discharge, or feels warmer than the rest of him, I would keep an eye on it. The next time your cat is in for his annual visit, show it to your vet, but it doesn't look like anything to be concerned with from these photos.

What you are describing almost sounds like an abscess. An abscess is a localized pus-filled pocket of infection and inflammation. I have never seen a reaction or infection caused by a microchip but that does not mean it can't happen. I would recommend having Jasper examined by his veterinarian to determine what is causing the swelling. His vet might have to remove the swelling/mass and have it tested/analyzed to see what exactly it is. This testing would help make sure that it is not cancerous lump. If it is determined to be from the microchip, I would have your vet contact the microchip manufacturer and let them know as that shouldn't happen with microchips. Best of luck to you and Jasper.