To Snape, the Oxygen Garden was the type of place that he would categorize as useful, with its staggering variety of plant and insect life; some of which were entirely unfamiliar to him, thus presumably native to planets other than Earth. The potential for new potion discoveries might be making him giddy if such a frivolous feeling wasn't completely contrary to his nature. And, if he hadn't been so focused on finding specific ingredients. Which was proving to be quite difficult with some items, due to the aforementioned abundance of plants. Another time perhaps, he would be quivering with academic anticipation and intrigued, but right at that moment, he was feeling more than a little bit irritated, as he'd been wandering around for two hours now without finding everything he required.

Pretty much the last thing he needed was to be pounced upon by some kind of lunatic cat person.

Snape's first instinct was a hastily shouted Protego! In effect, a Shield Charm; calculated to block an attacker from making contact, thereby buying him a few seconds to brandish his wand threateningly, with the intention of quickly following up with a Stunning Spell. Or worse.