My fiancee and I are newly relo'ed to lovely Georgia, but this time of year, even here, it gets cool at night..... and we are stuck for a while with ONE TWIN bed in the house.... and on a cool night, that twin has to be (ahem!!) "SHARED" with 4-5 of these creatures, AND a 60-lb. 10-year-old golden retriever......

One word which comes to mind is "Crowded".........

Another term might be "INSOMNIA"....... or, rather, "Sleep Deprivation"......

In short- they are not dangerous unless you attempt to move them, and if left happily alone all but the dog will purr incessantly and loudly.......