You guys, a rare video has suddenly surfaced of Null with his cat! Check this out:
Seriously now, I think Null is perfectly capable of taking care of a cat. He said in those Blockland posts that he's had cats before, so he's likely very experienced with taking care of cats. I know there's that other SomethingAwful post where he's fantasizing about murdering his mom's cats, but I think that was Null being an angry angsty teenager saying outrageous things to trigger people online. Null doesn't strike me as someone who would hurt animals. In fact, he strikes me as someone who feels more comfortable around animals than he does around humans.
I think his early adoption of cats as pets would help explain his teenage attraction to cat boys. Clara Stockings said that Null was home schooled because he was so badly bullied in school, he had to drop out. I suspect Null never had many IRL friends growing up, so his pets, his cats, were his friends. When his sexuality began to develop in puberty, he became attracted to an imaginary creature, which was a cat-like human, that was akin to the creatures that he was happy being around IRL.
Null with his cat, Ethan & Maggie with their rabbits... is everyone showing off their animals all of a sudden because it's spring?