Hi - when my cat was an "only cat," he used to meet me at the door when I came home and meow up a storm at me. Now, since I got a new kitten, he still greets me when I come in, but he doesn't meow like he used to. Is that a bad sign - that he's angry at me for bringing in the newcomer - or a good sign - that he wasn't lonely all day and has nothing to 'complain' about? Thank you!