Paralysis ticks in dogs: risk reduction and warning signs

Emergency first: if your dog is wobbly on its back legs, its bark or voice has changed, its breathing is laboured or grunting, or it's retching, gagging or struggling to swallow, treat it as an emergency and get to a vet straight away. Paralysis tick can be fatal, and signs can worsen quickly.

What the paralysis tick is

The paralysis tick (Ixodes holocyclus) is a small but dangerous tick that attaches to your dog, feeds, and releases a toxin affecting the nervous system. Dogs may encounter paralysis ticks along Australia's eastern coast — in bushland, parks, suburban gardens and coastal areas — and risk often increases during warmer months, but ticks can occur year-round.

Warning signs to watch for

• Wobbly back legs or weakness — often the first sign; trouble standing, walking or managing stairs.
• A changed or softer bark or voice.
• Laboured or grunting breathing — a serious sign that needs immediate veterinary attention.
• Retching, gagging or trouble swallowing, sometimes with drooling.
• Vomiting or coughing.

These signs (University of Sydney Veterinary Hospital) can appear even if you never saw a tick, and they can progress fast. If you spot any of them, don't wait to see if it settles — go.

Daily tick searching — the non-negotiable

In tick areas, daily tick searching is an essential additional precaution. The toxin does its damage over time, so finding and removing a tick early matters.

• How to search: part the fur and run your fingers slowly over the whole body — around the head, ears and neck, under the collar, between the toes and under the tail.
• If you find one: remove it promptly. A dog can carry more than one tick, so keep searching even after you've found the first.
• Then watch closely: contact your vet, and treat any warning sign as an emergency — signs can still develop after a tick is removed.

Risk reduction works in layers

This is the part to be honest about: tick-control products reduce risk, and daily tick checks are also important in tick-risk areas. Registered products are a valuable layer, but they don't replace daily searching.

• Tick products — several registered options may suit your dog; check what a product covers and how long it lasts on its label.
• Avoid the worst spots — keeping out of dense bush and long grass in peak season lowers exposure.
• Your vet — the best guide to what's right for your dog, especially with existing health conditions.

When in doubt, see your vet

If you're unsure about anything — a lump you can't identify, a sign that doesn't sit right, or which product to use — call your vet. With paralysis ticks, acting early is everything.

At Tidbit: our Flea & Worm Care range includes registered tick-control options such as NexGard Spectra. These reduce risk but don’t replace daily searching — check each label for what it covers and how long it lasts.

Related guides

• Fleas, ticks and worms: a practical owner’s guide
• Dog parasite treatments compared: spot-ons, chews and collars
• How often should you worm a dog in Australia?

Sources & further reading

• University of Sydney Veterinary Hospital — ticks in dogs — tick paralysis is a medical emergency; warning signs; daily tick checks recommended; "finding a tick does not necessarily mean the product has failed".
• Australian Veterinary Association — parasite prevention — year-round, vet-led risk assessment.

Sources reviewed 11 August 2026. This guide is general information, is AI-assisted and human-edited, and is not a substitute for individual veterinary advice. Always follow the product label and talk to your vet about your dog. Read our editorial policy.