Word meaning crying, but not crying?

You know when you see something touching and moving and you feel like tears are about to come out of your eyes, yet you're able to barely control it; how do you describe this feeling or state? i.e. I was all [...] at the sight of his master curled up asleep in fetal position on the floor at the vet's beside his dog.

Take a look at this and you'll know what I'm talking about:

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I was all choked up.

Fig. to cause someone to feel like starting to cry.

I got all misty-eyed.

  1. Having the eyes blurred, as with tears.

..............I felt the tears welling up.