我有一只4岁的小老鼠。过去几天他的呼吸很奇怪，非常刺耳，从今天起他的呼吸又恢复正常了。我应该担心吗？

My 11 week old, all white cat has a grey patch on the tip of her ear? It's new and she's a strictly indoor cat. What could it be?

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I have a betta fish andi have her in a jug...so I got many questions but main is does she need air pump and a fillter in the jug?

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