Zinyama zimadyedwa ndi ma acorns chifukwa zimakhala ndi zinthu zotchedwa tannin zomwe zimakhudzidwa kwambiri ndi nyama. Agalu omwe amatafuna ma acorn amathanso kukhudzidwa.
Tannin amawononga impso ndi chiwindi. Choncho samalani, chizindikiro choyamba cha poizoni wa acorn ndi, malinga ndi Poison Information Center, kuti galu amatopa ndikusiya kudya.