If bạn have a dog...

I know this câu hỏi may not be interesting but I need a little help (or at least some reassurance):

So, like always, I get my chó out of their kennels to let them outside. Well, when I went to hug my littlest one (yes, I hug my dogs), her forehead was really hot -may be over exaggerating but still! And, my mind might be just playing tricks on me, but she hasn't really jumped around a lot throughout the day, like she usually does. I don't how to tell if chó are sick. I looked it up but didn't find anything :/ I don't want to go to the vet and find out I was just overreacting XD
If bạn have any advice/expierences/ect about sick dogs, please help me out. Thank bạn for đọc :)