New answers tagged anime
Thanks to Krazer, this is the anime that featured 'Boa Juice' which dissolved people when they drank too much of it. Searching by 'Boa Juice', I found the film's actual title: Flying Phantom Ship (1969). From IMDb: Hayato's peaceful life with his parents and his dog is brought to a dramatic, terrible end when a giant robot, said to be sent from a flying ...
Zoids include 2 elephants and a mammoth, all sentient robotic vehicles. There are four anime series and at least one unofficial and recent movie, which isn't mentioned in the Wiki. The big elephant, Elephander, is from 2000 so can't be it: Mammoth is part of the 1983 line:
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