Cinnamon is a very nice pet. - right.
She especially loves to watch television. - grammatically, right, but the sentence needs revision, I think. It sounds quite incomplete. In some way, it sounds dangling.
Cinnamon always watches Sesame Street. - right.
She really loves Miss Piggy.- right.
Somtimes Cinnamon makes little Sqealing noises. - not so sure, but grammatically, it is.