<sod>Like [[opossums]], mice, and [[mole (animal)|moles]], hedgehogs have some natural [[Snake venom#Immunity|immunity]] against [[snake venom]] through the protein erinacin in the animal's muscular system, although it is only available in small amounts and a [[Viperidae|viper]] bite may still be fatal.<ref>{{cite journal |first=Tamotsu |last=Omori-Satoha |author2=Yoshio Yamakawab |author3=Dietrich Mebs |title=The antihemorrhagic factor, erinacin, from the European hedgehog (Erinaceus europaeus), a metalloprotease inhibitor of large molecular size possessing ficolin/opsonin P35 lectin domains |journal=Toxicon |volume=38 |issue=11 |pages=1561–80 |date=November 2000 |pmid=10775756 |doi=10.1016/S0041-0101(00)00090-8 }}</ref> In addition, hedgehogs are one of four known mammalian groups with mutations that protect against another snake venom, [[Snake venom#Neurotoxins|α-neurotoxin]]. [[Wild boar|Pig]]s, [[honey badger]]s, [[mongoose]]s, and hedgehogs all have mutations in the [[nicotinic acetylcholine receptor]] that prevent the [[snake venom]] α-neurotoxin from binding, though those mutations developed separately and independently.<ref>{{cite journal|last1=Drabeck|first1=D.H.|last2=Dean|first2=A.M.|last3=Jansa|first3=S.A.|title=Why the honey badger don't care: Convergent evolution of venom-targeted nicotinic acetylcholine receptors in mammals that survive venomous snake bites.|journal=Toxicon|date=June 1, 2015|volume=99|page=68|doi=10.1016/j.toxicon.2015.03.007|publisher=Elsevier}}</ref><eod>
<sod>Like [[opossums]], mice, and [[mole (animal)|moles]], hedgehogs have some natural [[Snake venom#Immunity|immunity]] against some [[snake venom]] through the protein erinacin in the animal's muscular system, although it is only available in small amounts and a [[Viperidae|viper]] bite may still be fatal.<ref>{{cite journal |first=Tamotsu |last=Omori-Satoha |author2=Yoshio Yamakawab |author3=Dietrich Mebs |title=The antihemorrhagic factor, erinacin, from the European hedgehog (Erinaceus europaeus), a metalloprotease inhibitor of large molecular size possessing ficolin/opsonin P35 lectin domains |journal=Toxicon |volume=38 |issue=11 |pages=1561–80 |date=November 2000 |pmid=10775756 |doi=10.1016/S0041-0101(00)00090-8 }}</ref> In addition, hedgehogs are one of four known mammalian groups with mutations that protect against another snake venom, [[Snake venom#Neurotoxins|α-neurotoxin]]. [[Wild boar|Pig]]s, [[honey badger]]s, [[mongoose]]s, and hedgehogs all have mutations in the [[nicotinic acetylcholine receptor]] that prevent the [[snake venom]] α-neurotoxin from binding, though those mutations developed separately and independently.<ref>{{cite journal|last1=Drabeck|first1=D.H.|last2=Dean|first2=A.M.|last3=Jansa|first3=S.A.|title=Why the honey badger don't care: Convergent evolution of venom-targeted nicotinic acetylcholine receptors in mammals that survive venomous snake bites.|journal=Toxicon|date=June 1, 2015|volume=99|page=68|doi=10.1016/j.toxicon.2015.03.007|publisher=Elsevier}}</ref><eod>