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No, the Siberian Husky was bred for very cold weather. They do not have the fur, nor the genetics to deal with very hot weather such as in Florida, Texas, California, ect. Purchasing a breed like the Siberian Husky and having it live in hot weather will not only be very difficult for the dog, but for the owner too. The owner will have to spend more money on A.C to keep the home at a much cooler temperature so it is comfortable for the dog. This breed are able to stand below zero temperatures, not warm temperatures. Also, this breed needs a large amount of exercise or they will become destructive, and vocal. They need an average of 2 hours of running exercise a day, and since they can not tolerate heat; they will need to be ran early in the morning (around 4am, when it's still relatively cool out) and again very late at night (around 10pm, when it has cooled down again). I would suggest a different breed of dog if you live in Florida, a breed that is able to deal with the hot weather and not be at risk for heat stroke.
Yes, it is perfectly fine for your Siberian Huskey to have bi-colored eyes. Siberian Huskies are well known for different colored eyes. Anything from dark brown, chocolate, almond, gold, grey, nearly white (ice blue), light blue, to deep blue.
The Siberian Husky has a very high prey drive and a lot of energy. They need an average of 3 hours of running exercise a day; as well as mental stimulation when not exercising. Children, with their high pitched laughter, frantic movements and play running can cause a Husky to become over-stimulated and for that prey drive to kick in. It does not mean that the dog wants to hurt the children, but an injury could occur because of the size of the dog compared to the child. If the puppy is raised with children, raised to respect children and given both training and exercise; then this breed can live perfectly fine with children.
A dog door is a good idea for any home that has a fully secured/fenced yard for their dog. But please take note of three things. Not all dogs will take to the dog door right away, you will need to train your dog to go through on their own. Secondly, make sure you purchase one that will fit your dog then they are full grown. Also, a dog door is an open invite to not only your dog, but other animals as well. It may be good to look into the dog doors that need an ID collar close to the door to unlock it. This way no stray cats or wild animals check out your home while you aren't looking.