Some countries should be wary of the nature of advancing animal (and machine) rights. Take, for example, New Zealand. We all know there are way too many sheep out there (almost ten sheep per one kiwi). Imagine giving the sheep the right to vote. They would soon establish a political movement of sorts and humans would be represented by a pitifully minor party in the parliament. We wouldn't even be able to rely on infighting, bickering and petty quarrels among the sheep, with their strong tendency to follow a leader.
Nonetheless, all of this pales in comparison with Wairarapa, a region which sits in the south-eastern part of the North Island, adjacent to Wellington. There are 3.5 million sheep - that's 80 times the number of humans! In this case humans would not be even recognized as a meaningful minority.
Or take Japan. There is one vending machine per 25 inhabitants. That's like 4%. Given the right to vote, a Vending Machine Movement could become the deciding factor in Japanese politics, with many frustrated voters casting their vote for vending machines rather than traditional politicians (have you ever heard of a corrupt vending machine?)
