My husband and I have just recently gotten our two angels – Dane and Bella. We have absolutely fallen in love with them. Today, though, Bella doesnt seem to be herself. I took her and Dane on a 40 minute walk this morning (it was about 10:00 am -- a little later in the day and hotter than when I usually take them) and then we met my husband for lunch and went to the dog park. We stayed at the dog park for about an hour. Bella didnt seem to interested in playing and mainly stayed in the shade with my husband and me (Dane on the other hand had a ball playing with his doggie friends). Anyway, when we got home Bella seemed extremely lathargic and a little warm. She has went outside to use the bathroom and has gotten up for water and a treat -- other than that she has just layed around which is not like her. Should I be as worried as I am or am I overeacting?