It's the image of a dog that is jumping in the air for a ball. The dog looks to be flying in the air, with all legs splayed out. It is attempting to reach a ball that is right in front of its nose.
This is a Dog Park icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,900 icons, all in the same style and quality.