Short answer: Unfed ticks are flat, oval, dark brown or reddish-brown, and 1-3 mm long (about the size of a sesame seed). Once attached and feeding, they swell to a gray-white ‘balloon’ 5-10 mm across, often described as looking like a small bean, skin tag, or wart on the skin.
What you should actually do
- Common attachment sites: head, ears, neck, between toes, groin, armpit – anywhere with thinner skin and warmth.
- Eight legs (ticks are arachnids, not insects) – this distinguishes them from skin tags, warts, papillomas, and engorged fleas.
- Color shift with feeding: dark brown when unfed -> gray/cream when engorged -> bluish-gray when fully fed (about 7 days for adult females).
- Common US species: black-legged tick (Ixodes scapularis – Lyme), American dog tick (Dermacentor variabilis – RMSF), brown dog tick (Rhipicephalus – Ehrlichia), lone star (Amblyomma – STARI).
- Run your hand through the coat slowly – ticks feel like a small firm bump anchored to the skin.
The most useful identifier is movement – skin tags don’t wiggle, ticks do (and they have legs you can see with a hand lens). A tick’s body sits up off the skin slightly while the mouthparts (capitulum) anchor down. If you part the fur, you can usually see the legs splayed around the head end.
After bath or grooming, do a thorough hand check especially in summer and fall in tick country. Use a sticky lint roller on short-coated dogs – it picks up larvae and nymphs you can’t feel.
Dig deeper
⚕️ Medical Disclaimer
The information on this page is intended for educational purposes only and does not replace a hands-on veterinary examination. Drug doses depend on your dog’s complete clinical picture, concurrent medications, and the exact product formulation. Always confirm dosing with your veterinarian before administering any medication, and contact a 24-hour veterinary emergency service or animal poison control immediately if you suspect a medication overdose or adverse reaction. Editorial standards: every drug dose published on PuppaDogs is cross-checked against multiple authoritative veterinary references and reviewed by PuppaDogs Veterinary Editorial Team before publication.
