What is this fluid-filled bump on my dog's belly near his navel?

This looks like an umbilical hernia, quite common and usually not serious in dogs. It is usually recommended to repair it when general anesthetic is performed for castration. Anyway, generally speaking, this kind of lump/growth needs to be ideally assessed by your veterinarian to have a definitive and specific answer. Usually there are two ways your vet can do that a part from examining it directly during physical examination (if it is an hernia physical examination will be enough). A biopsy can be taken under local or general anesthetic, otherwise a smaller sample through a fine needle can be aspirated (this technique is called FNA= fine needle aspiration). Other differentials include skin cysts, infections, benign or more sinister type of tumors (unlikely if Ichirou is under 5 years of age). Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

It looks like that left lower mammary gland is swollen from the photos although it is difficult to say for sure. The other "zit" looking things are pustules and could be the start of a bacterial infection of the skin or they could be plugged hair follicles. I think you should get her to your vet for an exam especially if that mammary gland is swollen. Hope this helps. Best wishes.

Luma could have an umbilical hernia. This is an opening in muscles wall located where the umbilical cord was previously attached. Typically these need to be corrected surgically and it can be done at the same time as when you get him neutered. It's never recommended to breed a dog who has had an umbilical hernia because there they are inherited. I would have Luma seen by a vet either tomorrow given this bump is large. The vet can diagnose if it is an umbilical hernia and can discuss when surgery should be done to fix it. I hope this helps!

This may be a hernia, which can occur in this area of the body (inguinal area). These are common in small puppies. I would recommend taking him in to your vet within the next couple of days to confirm this. Also you have the option of sharing a picture with either myself or another expert via consultation. Other possible causes for a lump is an inflammatory reaction (usually red), abscess (usually warm to the touch and may be painful, caused by trauma), or a seroma (blood filled sac due to trauma).

This may be an abscess, a cyst or a tumor. You should have it examined by your veterinarian, as it is not possible to distinguish these by just looking at a photo. An abscess can usually be treated with antibiotics and/or be lanced, and a cyst can be evacuated. To identify a tumor, your vet may want to do a fine needle aspirate (he takes some material from the bump with a needle and then looks at it under the microscope) to determine whether the mass is concerning.

Hello, & thank you for using Petco Pet Education Center, formerly Petcoach. The end of the nodule seems to have an ulcerated appearance which concerns me. Definitely have your vet take a look at this. I would recommend removal & having the tissue sent for pathology for identification. It looks like a full excision should be curative. Hope this helps. Take care.

Fluid filled structures on abnormal areas of the body are usually either cysts, abscesses, or tumors. The only way to know for sure is to have it examined by a veterinarian, and likely have it stuck with a needle to have the fluid examined.