Chicken bones are found in chicken and are often used to give to animals to chew on and grind their teeth.
As rabbits teeth are constantly growing they always need to be chewing something and grinding their teeth.
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So can rabbits eat chicken bones at all so as to grind their teeth.
They are not the best to give to rabbits as they are herbivores and cannot stand the taste of chicken.
It is far better to give them fruit tree branches which they will enjoy far more in order to grind their teeth.