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If that’s the case, then there’s also something more complex going on - animals can certainly learn to anticipate things at specific times, like food, a dog gets excited by a doorbell because they knew that means somebody is coming, they can get stressed out by innocuous things if they associate it with bad experiences like beatings.
Not saying you’re wrong, but it warrants further explanation, because as is it doesn’t match the simple experience of living with a dog.
GPL is virally open source, because code using it needs to also be open source.
According to your comment, that doesn’t apply to BSD, so BSD isn’t virally open source, and the claim is true.
The reason some consider this better is because a company can’t fork the code, keeping it private, improving their version with paid workforce while also merging in changes to the original project, thus ending up with a superior version that they can then sell for profit, to no benefit of the opensource version or the people contributing to it.
There’s more reasons, and a whole ideological side, but I think that’s the main practical reason for using copyleft licenses, and a big one.