Beagle: Keen sense of smell, savvy hunter. Moderately active, medium-sized. Lifespan: 10-15 years. Generally healthy. Eye/hip problems in older dogs.
Australian cattle dog: Athletic, intelligent. Lifespan: 12-16 years. Few health issues. Active nature may cause joint/ligament problems, treatable with rest/medication/surgery.
Chihuahua: Spirited, intelligent. Lifespan: ~20 years. Generally healthy. Breed-related issues: heart/eye problems, patellar luxation.
Greyhound: Fastest breed. Lifespan: 10-13 years. Generally healthy. Susceptible to bloat/gastric torsion. Monitor eating to prevent risks.
Poodles: Intelligent, athletic hunting dogs. Lifespan: 10-18 years. Longer, healthier lives. Prone to joint and eye issues.
Havanese: Cuban breed, small, smart, sociable. Lifespan: 14-16 years. Generally healthy, some prone to hereditary deafness.
Siberian husky: Strong, energetic sled-puller. Lifespan: 12-16 years. Usually healthy. Prone to eye and hip issues, reduced by breeders.
Basenjis: Intelligent, athletic hunting dogs with cat-like traits. Lifespan: 13-14 years. Few serious health issues. Prone to hypothyroidism and hip problems.
Border collies: Intelligent, athletic, driven dogs. Need a job. Hardy, healthy. Lifespan: 12-15 years. Prone to deafness, epilepsy.
Mixed-breed dogs: No pedigree, inherit traits from breeds. Wide gene pool reduces genetic disorders. Environment affects health.