As the health of US president Donald Trump continues to spark debate online, the 79-year-old bragged about acing' three cognitive tests during a rally in North Carolina on Friday, including being able to identify a giraffe. Yes, really. Trump's comments follow a Truth Social post earlier this month in which he claimed the tests are "something which few people would be able to do very well". The Republican wrote: "I ACED all three of them in front of large numbers of doctors and experts, most of whom I do not know. "Could you imagine Sleepy Joe [Biden] taking a cognitive test? The first question was like, what is this', and they show a lion, a giraffe, a fish and a hippopotamus, right, and they say, which is the giraffe?'