Short Story Ideas: Which is the better of the two?

Can you help me check if my structure is correct and I have noticed that my expression and structure of my essay is always poor and I don’t know how to make myself better. I was given an essay to write on which invention should have never been created and I would like to give you a portion of my essay for you to read and point out my mistakes and tell me how to improve myself.
He crossed the two different breeds and came out three puppies of the first Labradoodles. The other two needed a home so Wally aired a story for the new breeds of guide dogs on the Channel 9 in Melbourne. To Wally’s surprise there were ceaseless people calling in to take the puppies. He then crossed two Labradoodles  together  double doodles and two double doodles together creating tri doodles. Out of the thirty-three puppies only twenty-nine, were considered as Guide dogs. When it was released to the public and this did not meet the quantity of people who wanted this breed. (The Ultimate Labradoodle Community,2007). There are some of advantages of this breed. Firstly, these breed are not just incredibly cute. They are intelligent and easy to train. Serving the main purpose of being a guide dog and making life easier to the disabled ones.  Also, these breeds are very friendly, active and have excellent temperament. They also make excellent family dogs. Labradoodles hardly shed skin even when it changes from their puppy stage to mature dogs. Hence, they are hypoallergenic which is good for people that tend to be allergic to dogs. This means that people who are allergic to dogs can get Labradoodles and have a higher chance of not being allergic to this breed compared to other breeds of dogs. This is why the bred are bought more by people than any other breed