Before you even jump to the horrible conclusion, she did, after a minute or two, get up.
I am very confused and scared tonight and need some advice from you guys. Mali has been "slowing down" gradually over the past year but this summer I have seen more and more "old" traits popping up. Some days she's slower than others. Some days she takes a little longer getting up the stairs. Other days she acts like she's still a seven year old.
Tonight I took her out for her last walk before bedtime, she peed, pooped, did all that stuff, then we got to a grassy area and she laid down. I thought, "well that is odd" and tugged slightly on her leash and she just looked at me and did not get up. I tried again and again to coax her into getting up and she just wasn't having it. I freaked out and called my fiance on my cell phone to come and help me but by the time he got out the door (maybe a minute later), she was up and walking back to the house.
Did she just get really tired, more so than I've ever seen, and need a rest? Or should I take her to the emergency vet?
Her gums are normal, her pee is normal, her poops are nice, solid, and normal size. She's not breathing hard, she's drinking her normal amount of water, her appetite isn't ravenous but it's there (normal) and she did not wince or whine when I felt around for any signs of discomfort once we got inside.
Right now she's sleeping but prior to that was walking normal, licking our cats here and there, and seemed normal (just tired). Today was hot, compared to the last few weeks (we've been lucky and had relatively mild weather recently) and there were a lot of people in and out of the house tonight so the apartment wasn't as air conditioned as it normally is.
I don't want to over react and take her on a stressful trip to the emergency vet because she simply needed a break (in a way I'm just not used to) but I also don't want to under react.