We adopted a female cat (nearly 2 yrs) from the RSPCA 3 wks ago. She settled really quickly, confidently explored the house, gave us lots of attention etc, but 3 wks in and she seems more grumpy. The last couple of days she has just ignored us. Could it be the hot weather? Our she really wants to go outside? (She's very interested in getting out), has the novelty of humans worn off, or do you think we've just offended her?! She's eating well, but definitely sleeping more - possibly because she's more relaxed?