Isolation is another theme. Maybe the story takes place in a remote area where the sight of a strange 'dog - human' figure is especially terrifying. The victim is alone and has no one to turn to for help when this horrifying entity shows up. It creates a sense of helplessness.
Sound can also play a huge role. If the human in the dog suit makes strange noises, like a distorted growl or a howl that has an almost human quality to it, it can heighten the sense of fear. It's a sensory overload that makes the horror more palpable. For instance, in a dark alley, hearing those strange noises getting closer would be terrifying as you try to figure out what this strange hybrid creature is going to do.
There was a dog with human eyes in an old, abandoned house. A group of teenagers decided to explore the place. When they entered, they saw the dog sitting in a corner. Its human - like eyes seemed to follow their every move. The eyes were so real, it was as if a human was trapped inside the dog's body. As they got closer, the dog growled in a strange way. The teens quickly left, but they all had nightmares about those eyes for weeks.
It could be a result of some dark magic or a curse. Maybe an evil sorcerer experimented on the dog, transplanting human eyes as part of a twisted ritual. This would explain the horror aspect as it goes against the natural order.
One possible ending is that the girl manages to get the dog suit off just in time and realizes it was all a hallucination caused by some sort of drug or chemical on the suit. Another ending could be that she is stuck in the suit forever and slowly transforms into a real dog - like creature, living a life in misery.
Once there was a girl who found an old dog suit in an attic. She put it on for fun, but as soon as she did, she started to feel strange. Her eyesight became blurry and she saw things that weren't there. She heard growling sounds all around her. She tried to take the suit off, but it seemed to be stuck. Every time she moved, she felt more like a wild dog than a girl. It was a terrifying experience that she would never forget.
There were different characters throughout the series that wore the latex suit. It was often used for characters that had a more edgy or deviant side. These characters were usually part of the more disturbing storylines in American Horror Story, and the latex suit was a way to visually set them apart from the more normal characters. However, it's not easy to name just one character as it was used in different seasons and story arcs.
Well, one of the scariest moments could be when the character in the black suit first makes an unexpected appearance in a dimly lit corridor. It just gives this sense of impending doom.