Do Pets leave home knowing they are going to die?

I heard the above on the Channel U 10pm drama. I wonder if it is really true and tried to google it and saw some discussion at a forum here. Most of them said their dogs try to run away before they die.

This just simply reminds me of my girl girl who ran away twice on the same day, which soon after, passed away at home. I wished I knew that signs earlier.

In the channel U drama, while I was typing this, the retired policeman found his dog.... and he was so happy... and the dog ran towards him. This simply just reminded me of my girl girl when I found her at the lift lobby.

I just can't control my tears.... I missed her.....