All tortoises are turtles but not all turtles are tortoises. Although both belong to the order Testudines or Chelonia (reptiles whose bodies are attached to a shell), turtles are very different than the land-loving animal we call a tortoise.
The perfect exotic pet, the Bearded Dragon is a good starter lizard for either beginner or advanced reptile keepers.
Beardies are friendly and funny.
They are more gregarious than some other species and unlike the green iguana, which can get quite large, they are a medium sized lizard, seldom growing to over 20 inches long, nose to tail tip.
Training a dog isn't something you do and are done with. Training a dog lasts for as long as you keep it up and are consistent in the results you expect. It takes constant reinforcement and repetition. You train your dog to sit and every time you give the command and he does, you are training. What is most important is that you continue to reward your dog whether you use an "atta boy", a treat, or a pat.
Some people call them "Bark Collars" but, barking collars don't bark and aren't only used to stop dogs from barking. They are shock collars. Their sole purpose is not to train but to punish undesirable behavior with pain.