I don't think those are examples of unique intelligence except perhaps in a chauvinistic, anthropomorphic sense. We only know that we can't get other animals to display patterns we associate with intelligence in humans, however truthfully that's just as likely to be that our measures of intelligence don't map cleanly onto cognitive/perceptual representations innate to other animals. As we look for new ways to challenge animals that respect their innate differences, we're finding "simple" organisms like ants and spiders are surprisingly capable.
For a clear analogy, consider how tokenization causes LLMs to behave stupidly in certain cases, even though they're very capable in others.
I don't think they have ideas, so I don't think they're intelligent in the sense relevant to AGI. The list of intelligent animals is constantly increasing because doing some feat or other suffices for the animal to qualify. Solving mazes (slime molds), recognizing self in mirror (not dogs). Playing, using tools, reacting appropriately to words, transmitting habits down the generations (the closest thing they have to ideas). This is all imagined to be the precursors along the path to evolving intelligence, which conjures up a future world of complex crow and octopus material cultures. There's no reason to assume they're on such a path. Really all we're saying is that they seem clever. We've already made AI that seems clever, so the animals aren't a relevant example of anything.
For a clear analogy, consider how tokenization causes LLMs to behave stupidly in certain cases, even though they're very capable in others.