So Saturday morning I noticed my girl had some red blotches on her belly. She's always laying on her back begging for a belly rub, so it was easy to spot. There is one BIG spot that's under some fur and the other is by the middle of her lower belly and it's smaller. It's also where she doesn't have any hair, so it's very bright. It's a pink/red/purple color and it literally appeared from night to day! I'm certain it was not there on Friday.
My question, do dogs bruise like humans? I called the vet and the receptionist told me to watch it and that in fact they bruise and it should go away. She was playing with her buddy (boyfriend) on Friday night and they play chase and in the middle, she likes to roll over to let him get a nice sniff [

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Could this be something more serious? I wish I had a digital camera to post a pic, but I don't.