根据输入的关键词，生成5句相关的英语句子。


关键词：dog
1. My dog loves to play fetch with his favorite tennis ball in the backyard. 
2. When I come home, my dog always greets me with a wagging tail and sloppy kisses. 
3. I take my dog for a walk every morning before work to keep him healthy and happy. 
4. The shelter was full of abandoned dogs waiting for their forever homes. 
5. Despite being a small dog, my chihuahua has a big personality and is always full of energy.