My dog's veins are visible during heat. Is this normal or concerning?

On thinner areas of the dog such as the lower back leg, you can see the veins and it's not a problem. That being said, you can see inflammation of the superficial veins in dogs caused by an infection or formation of a clot. Without seeing Rey in person, I can't say for certain if this is ok or not. Even though she doesn't seem irritated by it, a vet visit just to make sure everything is ok would be best. I hope this helps!

Some dogs have bulging veins on their body, the vein may be visible all the time or only occasionally, usually when your dog has been having some type of physical exercise which causes the blood flow and blood pressure to increase. everything i mentioned is of course normal but if the vein appears randomly when your dog is at rest for example that would be something i would probably recommend to check (such as blood pressure at rest and heart rate at rest) to rule out any medical condition.

It is prominent, but not necessarily abnormal as long as he’s otherwise acting normal. If he is favoring the leg at all, or there are any masses on the leg, or any swelling noted, take him to your vet. But if he is otherwise fine there is no cause for concern. Thanks for asking Petco Pet Education Center, formerly Petcoach!

a higher hormone activity level such as during heat can indeed make the mammary complexes get more blood supply in preparation for a possible pregnancy. This should go away a little while after coming out of estrus (estrus = heat, and your dog is in heat for about three weeks after she stops bleeding. If the redness does not subside, or if the skin starts to look diseased, you should have your vet give Fufu a skin exam.

Are you talking about the veins on the side of his legs? Those appear normal for his breed and its nothing to worry about. The line on his left side along his ribs is harder to tell what is going on there. There's not a vein, per se, that would be there to be prominent normally. Does the skin appear normal in this line? Is he acting normally? If he's acting ok, make an appointment to get it checked out but its not an emergency. Thank you for asking Petco Pet Education Center, formerly Petcoach!

She is going out of heat and you will Roxie the swelling start to decrease. If there is no mucous vaginal discharge and she is acting normally, then I would not worry about the skin changing colors. There is not a known condition that causes this, but it is normal and usually will turn back with time. You may notice this happen on her belly too and it does not have to be related to a heat cycle

These prominent veins could be completely normal on Pearl. Some horses naturally have more prominent superficial veins, especially in areas where there isn't a lot of fat such as the lower legs and the face. This may not be something you need to be concerned about, but without seeing her in person, I can't say for certain. As long as she is otherwise eating and drinking normally, going to the bathroom normally, and behaving normally, I wouldn't be too worried. Instead, the next time you have the equine vet out, just have them check her over to make sure it's normal. I hope this helps!