My dogs occasionally will be on and off the bed during the night, particularly if it is warm weather. Well one night when Bella jumped up on the bed in the dark, Ripley (who sleeps way under the covers) must have growled at her because maybe she jumped on him. Maybe through fear of landing on him again, (though I doubt it ) she is reluctant to jump up on the bed if it is dark. Instead she will stay by the bed and do a very low GRRR. This is not a fun thing for me to hear at 3:00 AM because it means that I have to find out where in the bed Ripley is and then get out of bed and lift her rear end like chocolatepuppy used to do with Layla. (I like the idea of telling her to say her prayers....cute!...although at 3:00 AM I usually don't feel cute)!