You you be upset if someone compares your baby to a dog?

My baby will be a year next month. My husband and I decided to take the day off to spend it with her since we are rarely both with her at the same time. We work opposite shifts so majority of the time we are basically like a single mother/father. Well, my boss denied my day off but changed his mind later on. He asked the lead in my dept to post a sign up for overtime for that day. I totally appreciated it. The lead was very upset and complained about it yesterday (my day off) to all my co-workers saying it's stupid and unheard of for someone to want to take their kid's b-day off. She said if I can do that then she will take her dogs b-day off. It's the same thing. Now seriously I love dogs but comparing a dog's b-day to my baby's 1st birthday is ridiculous. My co-worker told me all about it when I returned to work today. Should I say something to her. I'm seriously upset about it. Do I have a reason to be upset?