Labrador Retriever
No other dog breed is as popular as the Labrador Retriever - it has been ranked as the number one breed to be kept as pets worldwide. Though Labradors have been bred as retriever-gun dogs (dogs used to aid hunters by retrieving game), their friendliness, warm character, patience, high trainability, and incredible sense of smell have solidified Labs as the top choice for many roles. From working as guide dogs and therapy dogs to serving in the military and police, there's nothing that the lovable Labrador Retriever can't do.