In any matter in which milk is considered to have the same status as flesh, as with unclean animals, whenever the milk is combined with the flesh, it is included on its behalf - except with clean animals, in which the Scripture treats them separately.

And there is a disagreement as to whether נבלה (carcass) belongs in the category of חלב(animal fat).

According to Rule 452, unforbidden quantities of unclean animals may be combined with one another to form a forbidden quantity, for instance milk from a camel and meat from a rabbit. This is not necessarily true for clean animals.