Yes, and DALLE clearly knows what a giraffe is, maybe not in the same way as we do, but it has placed the giraffe in some latent space close to other animals like it but far away from say, cars. But yes, there is plenty it doesn't know about giraffes because it's only been fed images and captions, while we can watch documentaries about giraffes and apply knowledge we've acquired about other animals and the world through our senses.