The number of paralysis tick cases in pets has risen significantly in the past two years and this year's mild winter has resulted in perfect breeding conditions for the potentially deadly parasites.

While paralysis ticks are rare in Canberra, the South Coast has long been regarded a hot spot with a number of deaths reported each year. The national disease watchdog database has identified Moruya and Tuross Head as among the worst paralysis tick areas in NSW.

Canberra veterinarian Michael Archinal said pet owners should check their pets regularly for ticks and apply a tick treatment before travelling. ''It's important because it can be potentially fatal.''

Veterinarian and Dogs NSW spokesman Peter Higgins said tick prevention is crucial because the onset of paralysis and eventual death can occur in a matter of hours.

''Ticks are very small, but can still have huge effects, even on big dogs. Dog owners must contact their vet as soon as a tick is found to make sure the toxin can be neutralised,'' he said.

Paralysis ticks (Ixodes holocyclus) are one of the most dangerous parasites in the bush for dogs, cats and young children.

The ticks are carried by native animals such as bandicoots and breed predominantly along the east coast in warm and humid weather.

Paralysis tick bites are usually treated with an anti-toxin serum.

''Ticks are blue-grey in colour, and can range from 3mm to 10mm in length.

''They are most commonly found around the head and neck and can sometimes attach themselves in less obvious areas, including between toes, inside the eyelids, and inside the ears,'' Mr Higgins said.

Ticks inject toxins into the ''host'' as they feed, causing paralysis. Early warning signs can include a visible weakness when standing and walking, and vomiting. As symptoms progress, dogs will overheat, pant rapidly, and collapse on their hind legs. Symptoms tend to progress at a faster rate in hot weather.

''It is best to feel for a tick, not look for one. If owners do find a tick, never apply metho or turps to the area as this will cause the tick to inject all its venom at once. Instead, remove it with a small pair of scissors and then get to the vet ASAP.

''It's a tough season ahead for dogs and dog owners this year. I urge owners to take extra precautions and check their dogs regularly.''