Red bump on dog

My three year old black lab had a red topped raised bump in the middle of his back. My husband and I just noticed it. It  doesn’t seem to hurt him or bother him but we noticed it as we were petting him earlier this evening. I looked up some things online but nothing really looks like what it is. Let me know all your thoughts! Either way - hoping to get an appointment with our vet asap. Appreciate all the help in figuring out what this may be. 

Hello!  The truth is that it's hard to identify this red spot out of context, from these photos.  I made it large on a bigger screen;  it may even be hard to identify it in real life.  There are some rare sinister things that it could be but an apparently painless single red spot wouldn't be the first sign of trouble in most cases.  Perhaps an inflamed or sore follicle could be the cause, or an insect bite.  I also wondered about demodex mites (cause folliculitis) or slight trauma, of the very first sighting of a lump. Planning (perhaps they can do phone triage), a vet appointment for inspection may be a good idea.  We would advise cutting / shaving a little hair from over or around the site, in case it becomes frustrating to find in the future, in order to monitor it.  Often, punctate bleeds happen and pass without any more being said, but if it does lead to anything more then at least you'll be alert for it.

It is worth saying, that an unusual presentation of Ringworm may be a possibility, so it is a good idea to use gloves to touch the area just in case.

However, Ringworm generally starts with a bald patch, not a red spot!

Hello!  I am going to rewrite this answer in a more logical order, because I feel that my answers above may be mixed and confusing.  Here goes:   Your picture appears to show a single small, quite punctate red area on the back which could, at first glance, be a scratch or an insect bite or a 'spot.'  I wondered about an inflamed follicle or flea / fly bites, for example.  In many situations, such a lesion would heal quickly and easily, even before a vet visit could take place.  We would advise making sure that you can find the lesion again - vets often do this by cutting or  shaving a patch of fur but this can be stressful for yourself or the pet or feel dangerous, so a good alternative would be to remember where it is (for example, two inches forward of the narrowest point of the waist, over / to the left of the spine etc).   Perhaps you can ask your vet nurse over the phone whether or at what point they would like to see the patient (we call this 'triage'). However, if there are other symptoms, or the situation develops (for example, the red patch gets bigger or excessive licking occurs) or if, for example, you already know of a tick bite or possible small rodent bite in that area, then the case should be triaged as an emergency. I hope that this is clearer.

On one of the shots it looks as though there is already a bald patch around the lesion, but on the zoomed out picture I cannot see this at all.  If there is a bald area, please do bear in mind that ringworm may be a possibility and take precautions.  Best of luck and we'd be interested to hear what is found.

my dog also has this kind of bump. i assume that it was cause of tick

If you know that your dog has had a tick attached, you need to speak to your vet relatively urgently - ticks can carry different diseases in different places (eg Lyme's) and your vet will know the risks locally. Sometimes and in some areas, specific drugs are suggested as a matter of course.  However, if you haven't seen a tick and are saying 'tick' in lieu of insects in general, then it's less likely that your vet will consider emergency drugs worthwhile, but still worth letting them know.