He stiffens as she picks up the cat, watching, a little tense. In reality, she hasn't shown any signs of being cruel. That doesn't mean he doesn't worry. It's a day ending in y, therefore he worries.

"She belongs to me." Anders' shoulders are out of the water as he stands. "She's Hero of Purrelden, and the prettiest thing in Skyhold." Even prettier than him. He's not biased at all.