walking at the afternoon

Yesterday I was walking with my dog by the park, it was seven o'clock and it was  still hot .When we went out of our house, my dog ran and ran, but thirty minutes later, he was already tired and thirsty. when he saw some  shade under a tree, he lay down until he saw a squirrel and he suddenly got up and ran trying catch the squirrel but he didn't get it and  unfortunately he ran again , but this time  in the direction of home.