I would think the cases of non-human animals committing suicide (mostly cetaceans) would be indicative that at least some of them can comprehend personal mortality on some level. It’s a bit different if an animal doesn’t eat due to stress or whatever and starves to death, I wouldn’t call that suicide. But whales occasionally just drown themselves, that’s pretty hard to rationalize any other way
I would think the cases of non-human animals committing suicide (mostly cetaceans) would be indicative that at least some of them can comprehend personal mortality on some level. It’s a bit different if an animal doesn’t eat due to stress or whatever and starves to death, I wouldn’t call that suicide. But whales occasionally just drown themselves, that’s pretty hard to rationalize any other way