My blue and white dog

I am a dog that has soft velvet ears and a fluffy tail that is always wagging;
And a circular, rough nose.
I’ve got three paws, blue spots and two black inky eyes made out of beads.
My white fur like white marshmallows;
Three holes, like craters.

I am as special as a four leaf clover to my owner.
Everything is colourless when she leaves for school and takes years to come back.
I love when my owner picks me out of the box and snuggles me in her blanket.

When I go outside I feel as free as a bird;
But when I am not outside I am in the crammed with other animals who are always growling at me.
I fell scared in the box but my owner comes and picks me up like a baby; and,
I feel safe.