Friendship comes in all shapes and sizes. This impala and the red-billed oxpecker, pictured in South Africa, both get something out of buddying up. The oxpecker gets food by eating ticks from the impala's skin, while the impala gets to stay clean.

From exchanging friendship bracelets to sharing social media posts and messages, Americans have come up with their own special traditions to appreciate their pals. And this is a good day to reflect on the many ways friendship impacts our lives. The first Sunday of August is Friendship Day. So, let's learn from our homepage duo and reach out to our friends, to catch up on each other's lives or to simply say, 'I appreciate you.'