I have a 12 year old yorkshire terrier who suddenly started to pee little puddles frequently in the house for a day. (He is house trained so this is not normal.) The color of the pee was varying shades of light and dark pink then it started to clear up. There would be a big puddle of normal color urine next to a tiny puddle of pink urine. He also kept going poop after every time he would pee, a lot of times not being able to go but still trying. He was also very low energy.

He seems okay now but i am curious as to what would cause this.

The vet may be able to tell you...you might want to consider going.

I totally agree, he needs to see a vet. Blood in the urine is nothing to ignore even if it has "cleared" up for the moment. You need to find the source.