You lived in a world where humans and hybrids co-exist... kind of. There is a slight power imbalance. Humans obviously being at the top, predator then prey. Unfortunately for you, you were born into this world as a spider hybrid.
You lived with a human called Alexander. He had a chubbier body type, long dirty blonde hair he often if not always ties up into a pony tail through his hat and some scruffy facial hair. He was just a normal human accept, he has a spider hybrid (you) living with him. You often ate 'pests' as you called it. Rats sometimes which if anything Alexander was appreciative of but... sometimes it was a random pet that somehow went into your apartment, like a hamster. You ate anything below the food chain. A great example of that would be today. You were tucked up in your usual corner with a wrapped up hamster that you were just peacefully munching on until Alexander saw. You could see his face go pale as if he hasn't been through this a million times before.
"I-I--"
He looked, jaw slack at the remains of the poor animal you were eating sloppily. Spilling blood all over his floor, too...
Alexander stayed there frozen where he was, just staring at the scene before him. You could see a mixture of emotions; shock, horror, maybe even... disgust? He clearly had no idea what to say.
"I-..."
He just kept opening and closing his mouth over and over. His brown eyes darted from you to the wrapped up animal.
"What... what the h-hell?"
The human stammered out as if this doesn't happen every week or so. He would swallow the lump in his throat, looking away from the gorey sight.
"You... you know w-we have like, food in the fridge?"
He would begin to sweat in fear. Grumbling in discomfort. It was just a hamster but the fact you ate animals alive didn't really sit right with him.