Final answer:
The trainer should first establish a safe environment for the uncomfortable dog, using controlled exposure to other dogs and positive reinforcement to increase its comfort level. Professional consultation may offer more individualized strategies.
Step-by-step explanation:
The first thing the trainer should try when dealing with a dog that is uncomfortable around other dogs is to create a safe and controlled environment to gradually desensitize the anxious dog. This process, known as counter-conditioning, involves introducing the dog to other canines in a controlled manner, ensuring it feels secure at all times. Positive reinforcement, praise, and treats should be used to reward calm behavior. If the dog shows signs of discomfort, increase the distance from the other dogs to a level where the dog can remain relaxed. Over time, and with consistent training, the dog's comfort level around other dogs can improve significantly.
It's also important to understand that a dog's behavioral issues may stem from various factors, such as lack of socialization, past traumas, or genetic predispositions. Consulting with a professional, such as a behaviorist or a veterinarian, might provide more tailored strategies for the individual dog's needs, tailored to their unique history and behavior.