The Labradoodle, while not the granddaddy of Poodle mixes, is the hybrid that prompted a craze that has yet to die down. Produced from cross-breeding a Labrador Retriever with a Poodle (almost always a Standard Poodle, but Toy and Miniature Labradoodles are becoming popular and as such, Toy and Mini Poodles are being used), your 'Doodle pup may have more Lab than Poodle or vice-versa, or she may be a perfect mix of both. Even within the same litter, Labradoodle puppies can vary in their inherited characteristics. It's best to learn about both parent breeds and as much qualified Labradoodle information as you can find if you plan on adopting a Labradoodle.
Labradoodles are generally very headstrong as they come from two highly trainable and very intelligent parent breeds. As such, a fair amount of patience is required when training and socializing them, and this must be done early and consistently. Proof of their intelligence is found in the hybrid dog's conception: a breeder with the Royal Guide Dogs Association of Australia sought to produce a hypoallergenic guide dog for blind people.
Although Labradoodles make great family pets, they must be made aware that you are the leader of the pack. They come from parent breeds that work in packs (Labradors) and have a long history of being used in war (Poodles), and they are instinctively inclined to shoot like a pistol through the family's "weaker links" and commandeer the household. It may be as subtle as being pushy during playtime or as obvious as begging and barking for food, but it can be greatly mitigated with early training and daily exercise. While 'Doodles are loyal and will follow you all around (that's the Poodle in them), they want what they want, and they should be taught early to work with all family members.
Under that oft-curly coat, there is a Labradoodle that needs to stretch his legs and will be happy to spend hours running around the yard, going on long walks and playing at the dog park. To not oblige this will prompt that energy to be released in unpleasant ways such as incessant barking, chewing on things other than toys, and developing various bad behaviors. There are many Search & Rescue units that use Labradoodles, and the flip-side is that, as a family pet, they have that energy, strength and stamina in reserve and as such, need to burn it off every day.