A shrew or mole.
The naked mole rat.
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The term for bone marrow from a close relative is "allogeneic bone marrow transplant."
Depends on country/state and how close the relative is.
a whale
cadmium
leopard Seal is the close present day relative for the Canada Lynx.
Any realtive who is not closely related to you is a distant relative. Who si distant and who is close depends on how your family functions and what you think is distant ro close.
an apple tree
Lions, leopards, and tigers.
Swarajmathi Nehru