Golden Retrievers are gentle, patient, and eager to please, making them ideal for various service dog roles. They are commonly trained as guide dogs, therapy dogs, and emotional support animals due to their calm demeanor and ability to bond closely with their handlers.

German Shepherds are highly intelligent, versatile, and known for their loyalty and protective nature. They are frequently utilized as service dogs for roles such as police and military work, search and rescue operations, and assistance for individuals with disabilities.

Poodles are highly trainable, hypoallergenic, and come in different sizes (standard, miniature, and toy), making them versatile as service dogs. They excel in roles such as guide dogs, hearing dogs, and medical alert dogs due to their intelligence and ability to learn complex tasks.

Border Collies are exceptionally intelligent, energetic, and eager to work, making them suitable for service dog roles that require mental stimulation and agility. They are often trained as assistance dogs for individuals with autism, as well as in search and rescue operations.

Labradoodles are a crossbreed between Labrador Retrievers and Poodles, combining the intelligence and trainability of both breeds. They are often chosen as service dogs for their hypoallergenic coat and versatility in various assistance roles.