What a straightforward sting usually looks like
A single sting on a paw, leg, or body often produces a dog who yelps, licks or chews at one sore place, and develops a firm local swelling over the next short while. He may limp if a front paw pad area was stung after snapping at or stepping on a bee in grass. If he is otherwise bright, breathing easily, eating and drinking, and the swelling is not spreading, many owners are advised to monitor closely at home and call if anything changes.
If you can see a stinger still in the skin and can remove it calmly without squeezing or distressing your dog, do so gently; if you cannot, or your dog will not allow it, leave it and ask your vet. Keep him from chewing the area, which turns a small sting into a sore, infected patch.
Reactions that mean go now, not later
Facial and muzzle stings swell dramatically and matter more because swelling near the mouth and throat can crowd breathing. Multiple stings — for example after disturbing a nest — also raise the stakes and warrant urgent advice even before dramatic signs appear. Vomiting, diarrhoea, sudden weakness or collapse, widespread raised hives, heavy drooling, and noisy or laboured breathing are all signs to seek emergency care immediately rather than monitoring at home.
Reactions do not always peak instantly. A dog who seemed fine can worsen as swelling develops, so the first period after a sting calls for staying with him and watching breathing and swelling closely, not leaving him alone in the garden.
Stings in the mouth need special caution
Dogs who snap at flying insects get stung on the lips, tongue, or inside the mouth, where even modest swelling has less room. Pawing at the mouth, drooling, refusing food, gagging, or swelling you can see inside the mouth should prompt a call to your vet for advice on whether he needs to be seen straight away.
Tell the vet where the sting is, how many stings you suspect, when it happened, and what signs you are seeing now. That information decides the urgency far better than describing it simply as a bee sting.
Watching well at home
For a mild, local sting you are monitoring, keep your dog quiet indoors, check the swelling and his breathing regularly, and note whether he can settle, drink, and walk normally. Photographing the swelling at intervals can help you judge honestly whether it is spreading or easing, instead of relying on impression.
After any sting, keep bees and wasps in mind on the next few walks: avoid letting your dog snap at insects around flowering hedges, fallen fruit, or outdoor bins, and move away calmly if he starts pawing at something in the grass. If he has ever had facial swelling or widespread hives from a sting, tell every vet, boarder, and dog walker who looks after him, because that history changes how quickly they should act. Write the reaction on his home care notes too, so a family member who was not there knows not to take a swollen muzzle lightly.
If swelling spreads, new signs appear, or your dog seems increasingly uncomfortable, stop monitoring and call. Storing the date, sting site, and your vet's guidance in KinsLe Pet Passport means a future sting is handled with his past reaction already on record.