My dog has red marks and is scratching. Are they bug bites or serious?

I can't tell from to photo, but are those 'seed ticks'? Other possible causes of itching/scratching/bites include mites or ant bites. If you cannot identify the cause, I recommend to have Bull examined by the veterinarian who may recommend a medication to treats the possible parasites and medications to help with any itching. Best of luck.

It is hard to tell for sure it if both dogs have it I would be most suspicious of black fly bites, which are often just a local irritant. However, the other big concern would be petechia hemorrhages- which could come secondary to things like rat poison exposure! If they are feeling fine and were exposed to flies recently this is more likely but if they seem to feel off or had any other signs of concern it would be safer to take them in!

Poor Dewey! I'm so sorry to hear of his skin troubles. Dewey could be dealing with a number of potential problems. It is difficult to tell from your photo, but it is possible that Dewey is having a reaction to some sort of biting fly or similar. You could try an over the counter topical parasite preventative that targets biting flying insects and see if this helps. The lesions may have become infected, contributing to the scabbed appearance. Patchy hairloss and lesions like this can also indicate a problem called demodex-caused by tiny mites that live in the skin. These tiny bugs can only be treated with certain medications, and can cause ongoing skin problems if not addressed. I would recommend having Dewey checked over by your regular veterinarian-they will perform a thorough physical examination, and may recommend some skin tests such as a skin scrape, which can give better insight into the cause of Deweys problem. Your vet will then prescribe medications as appropriate-he may be prescribed antibiotics, anti-inflammatories, medicated shampoo. I hope you are able to determine the nature of Dewey's problem and get him looking and feeling better soon!

It is possible this is an insect bite. Fly bites in particular can look like a red ring with a central pallor (pale area in the middle). It is tough to tell from the photo what the central area looks like. If it is raised and looks like it is filled with yellow/pus, then this could be a pustule which is a sign of skin infection. If the center is flat with the skin and just pale in color, then a bug bite is more likely.

These are likely fly or insect bites. They should fade in the next day or two. If he begins to itch, contact your veterinarian for a dose of Benadryl (diphenhydramine). Place an e-collar (cone) on him to prevent licking. These bites are common in the Spring.

Misty sounds very itchy if she is pulling out all her fur and scratching herself until she is bleeding. I would be concerned she has medical problem causing this scratching, such as mites, ringworm, or allergies. I recommend taking her into the vet for an exam today or first thing Monday. The vet can do blood tests, skin scrapings, and use a Wood's lamp to diagnose allergies, mites, and ringworm. Once the cause of the scratching is found, the vet can prescribe the appropriate treatment.

I'm sorry to hear that Misty has to manage allergies since I understand how challenging this issue can be to manage. The lesion on her abdomen pictured looks most like a black fly bite (also called black fly strike). Even though these bites look pretty scary, they generally resolve on their own without any treatment within 2 weeks. As long as she doesn't seem particularly bothered by this lesion, I would recommend continuing to monitor it for the time being. If the lesion gets worse at any point or is still there in 2 weeks, then it should be assessed by her vet. Regardless, if Misty is still scratching her neck a lot, she should be examined by her vet for this issue. Excessive scratching can damage the outermost protective skin layer, which can lead to the onset of skin infections. These infections typically require prescription antibiotics to treat, so it's best to catch them before they become too severe. I hope that everything goes well!