i recall Madara saying the only one who has the antidote to those venom beetles was Torune's father and he passed it on to him. Does it mean that anyone from the Aburame clan can gain that ability without the antidote?
am not sure but i guess a clan from the earth nation cos HQ contacted Akatsuchi from the earth nation to get rid of the white Zetsu's underground which he did together with his daughter.
ok. will it be possible for those who uses kuchiyose jutsu(not sure about some but in Naruto's case) teleports to where the animals live during battle?
Can the user teleports to wherever he/she wants to go? i think its impossible thats why Minato used kunais with special marks on them. In the case of Madara, he teleported straight to where Sasuke was. or perhaps he has placed a hidden mark on him.