What are the common signs of ticks inside dogs' ears and how can they be safely removed?

Common signs of ticks inside dogs' ears include head shaking, scratching at the ears, and redness or swelling. To safely remove a tick from a dog's ear, use fine-tipped tweezers to grasp the tick as close to the skin as possible and pull straight out with steady pressure. Avoid twisting or squeezing the tick, and clean the area with antiseptic after removal.