Feeling like crap, poor dog

I went out in my backyard to see that my outside dog was looking like crap. It looks like he hasn't been eating and when I sat and watched him he groans when he breathes out. My husband said he hasn't seemed right the past 2 days (not his squirrel chasing self) and the poor thing is stuck waiting till my husband can get out of work tonight. I tried to get the day off but couldn't 😣 I wish I could of taken him earlier instead of the poor thing waiting 6 more hours...