A lump on a dog is usually a harmless fatty growth called a lipoma, especially if it is soft, round, and moves freely under the skin. A lump that feels hard, is fixed in place, grows quickly, bleeds, or is painful to touch needs a vet visit soon rather than a wait-and-watch approach.
Finding a new lump on your dog's skin during a cuddle or a bath is unsettling, but most lumps in dogs are not an emergency. The way a lump feels, where it sits, and how fast it changes tell you far more than its size alone.
This guide covers how to tell a harmless fatty lump from one that needs prompt attention, plus a quick reference chart and simple steps for checking a lump at home.
Dog lump quick reference chart
| What you feel or see | What it can mean | Severity | What to do |
|---|---|---|---|
| Soft, round, moves under the skin | Likely a fatty lump (lipoma), common in older or overweight dogs | Monitor | Keep an eye on size and shape, mention it at the next vet visit. |
| Tiny bump after a vaccine | A mild vaccine site reaction, usually fades within days | Normal | Watch for a few days. Vet if it grows or does not fade. |
| Firm, fixed, does not move | Could be a cyst, wart, or a growth that needs a closer look | Monitor | See a vet within a week for a proper look. |
| Small firm bump after being outdoors | Could be a tick or an insect bite reaction | Monitor | Check carefully for an embedded tick, watch for spreading swelling. |
| Red, warm, painful to touch | Possible abscess, infected bite, or an infected wound | Urgent | See a vet soon, sooner if it is draining fluid or growing. |
| Growing fast over days or weeks | Rapid growth of any kind is worth a prompt check | Urgent | See a vet within a day or two. |
| Bleeding, oozing, or foul smelling | Could be an ulcerated or infected growth | Urgent | See a vet the same day. |
Soft, movable lumps: usually lipomas
The most common lump owners find on a dog is a lipoma, a soft pocket of fatty tissue sitting just under the skin. Lipomas feel smooth, move slightly when pressed, and grow slowly over months. They are especially common on the chest, belly, and legs of older, larger dogs. Labradors and Golden Retrievers, both popular breeds in Indian homes, tend to develop these fatty lumps more often as they age, particularly if they carry extra weight.
A slow-growing, painless, soft lump is generally low priority, but it is still worth having a vet feel it at least once, since a firm lump can sometimes be mistaken for a soft one by touch alone.
Firm or fixed lumps
A lump that feels hard, sits deeper in the tissue, or does not shift when you press it is a different story. Cysts, warts, and some types of skin growths fall into this category, and while many are harmless, a firm or fixed lump is the kind that benefits most from a vet taking a proper look, sometimes with a simple needle sample to check what it is made of.
Bumps after time outdoors
During India's warm, humid months from roughly June to September, ticks and biting insects are far more active, and a sudden small firm bump after a walk in a park or garden is often a bite reaction or an embedded tick. Part the fur carefully to look for a small dark speck attached to the skin. If you find one, it should be removed carefully rather than left in place, and the area watched for spreading redness or swelling over the next day or two.
Not sure how worried to be?
PawCheck's skin scanner reads a photo of your dog's lump and gives you a severity result, Normal, Monitor, or Urgent, in seconds.
Get it on Google Play ↗Fast-growing, painful, or bleeding lumps
Any lump that changes noticeably from one week to the next deserves prompt attention, regardless of how it feels. The same goes for a lump that is red, warm, or clearly painful when touched, since this pattern points to inflammation, infection, or an abscess rather than a simple fatty growth. A lump that bleeds, oozes, or has an unpleasant smell should be checked the same day. This is the category where waiting genuinely costs you time that matters.
How to check a lump at home
- Feel the texture: soft and squishy versus hard and firm
- Check if it moves: gently press to see if it shifts under the skin or is fixed to deeper tissue
- Note the size: measure roughly with a finger-width reference and recheck weekly
- Look at the skin over it: normal colour versus red, broken, or discharging
- Ask if it hurts: most dogs flinch or pull away from a painful lump when it is pressed gently
- Photograph it: a dated photo next to a coin or your finger makes size changes much easier to track over time
If your dog also has patchy hair loss around a lump, our guide on dog hair loss in patches covers the common skin causes, and if the skin nearby looks red and irritated rather than lumpy, see our guide on dog hot spots. You can also read more general guidance on dog skin health screening with PawCheck.
When a lump means a vet visit, quick guide
- Same day (urgent): bleeding, oozing, a foul smell, sudden fast growth, or clear pain when touched
- Within a day or two: a lump that is red, warm, or has grown noticeably over the past week
- Within a week: a firm or fixed lump that does not move, even if it is not painful
- Watch at home: a soft, slow-growing, painless lump that has stayed roughly the same size for weeks
A lump that grows quickly, bleeds, oozes, smells bad, or is clearly painful should be checked by a vet without delay. Never squeeze, cut, or apply home remedies to an unknown lump, since this can spread infection or make a proper examination harder.