Ticks transmit serious diseases including Lyme disease and anaplasmosis to dogs while causing local discomfort, and year-round prevention with modern treatments is the most effective welfare intervention.
Tick welfare impact extends beyond tick attachment itself to the serious diseases transmitted: Lyme disease in dogs causes polyarthritis, kidney disease, and neurological signs that cause significant chronic suffering if untreated or diagnosed late. The acute discomfort of tick attachment and the potential for tick paralysis (from certain species) add direct welfare concerns. Modern isoxazoline treatments have dramatically simplified tick prevention - monthly or quarterly treatments provide reliable, broad-spectrum protection without the need for topical products that many dogs resent. The expanding tick geographic range means dogs in previously low-risk areas now face significant exposure, and prevention protocols need updating for changing regional risk. Owner compliance with year-round prevention (rather than seasonal) is the key implementation challenge, as ticks are active in mild winter periods in many regions.