I have 2 Bengals and they do require a lot of attention. They need daily time to play with thier people. I have several cat trees for them to climb on and lots of cat toys for them. Our boy loves to sit in the window during the day. Our girl is a little love bug but she can also be a pushy cat when it comes to our other non bengal cat. The get burst of energy and run through the house, usually in the morning and chase each other puffed up. They love to grab your leg around the ankle and bunny kick and they bite, but they are playing and excited as they bunny kick our ankles. They can be taught not to play that way on your legs but it takes time. We have fun with them playing that way.
It sounds like your cat needs a lot of activity so it is ready to settle down when you go to bed at night. When it bites, firmly say NO and they will get the message if you are consistant.
They like the litter box scooped everyday, so if you are not doing that, it may account for the mess on the bed. I hope you can work things out with your Bengal. We love ours.
You can check ours out at my blog:
http://bengalcatdomination.blogspot.com/
