a rabbit could kill a hamster but it deppends how the rabbit and hamster act. if you are not sure if your rabbit will kill the hamester then you put the rabbit in one cage and put the hamster in another cage right next to the rabbit and see what happens.
A spotted rabbit has the genes Enen and a solid rabbit is enen. A cross between the two would have a 50% chance of being spotted ( called "broken" in the rabbit world) and 50% chance of being solid colored.
If you held a rabbit by the ears, you would frighten the rabbit very much and cause it terrible agony. You might even break the ears, and when that happens they can't be fixed. Picking a rabbit up by the ears is animal cruelty! Don't do it.
When a rabbit clicks its teeth, that means it is happy! Usually when an animal chatters its teeth its a warning, but the rabbit is a happy fellow! Also, when a rabbit tries to nibble you, its another way to show that he/she likes you!