English "loud"and "noisy" are similar in denotation, but not connotation. To say something is "loud" is a description, but not necessarily an evaluation, of the sound; however, to say it is "noisy" is to judge the sound to be unpleasantly loud. It is true that using "loud" here could be a roundabout way of suggesting that the dog is noisy, but that would be a matter of context.
In English "dog" and "hound" are not synonymous. A "hound" is a breed (or type or variety) of dog. For pictures of "hound dog" Go to : https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=picture%20of%20a%20hound%20dog look under "images for a hound dog".
I think this is an unlikely sentence in English. We might say (as someone has suggested), "The dog is noisy", or we might use "loud" or "loudly" to describe the dog's bark, for example, "The dog barks loudly".