Rats are sleeping more, eating less?

Seem to be napping a lot more when they're in their cage, when taken out they still have a lot of energy.


They also seem to be eating a bit less than normal. Could this be because of the colder weather?Rats are sleeping more, eating less?
It could be the cold, and also if they're older they're just slowing down a bit like all things do.Rats are sleeping more, eating less?
probably

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