A Cautionary Tale
We think we can understand this one. The giraffe got a very important business-type job, as evidenced by his wearing a tie. But then, he got a big head from it and thought he was better than all the unemployed giraffes.
We know this because of the words "ahead is lengthened." However, although he was good at his job, the giraffe was eventually deemed irrelevant. We can see that from the text at the bottom. The moral of this story? Don't be a big-headed giraffe.