why it was here?

 It isn't a beautiful picture but is so fun for me because:
One day I was in my house doing my things, when I went out for something (i can't remember what), I opened the door and I saw a pug in my garden, i thought whaaaaaaaat?!?!?
I cuddled him off course.
I started to think: why is the pug was in my garden? when I heard a scream "Helloooo", it was my neighbor yelling towards to my house for the dog.
the reason why was the pug in my garden is the next:
My  grandmother was arriving to the garden when the pug came running and my grandmother doesn't
realized so she closed the door with the pug inside.
My neighbor tried to tell my grandmother that the dog was inside but my grandmother din't listen nothing.
  I really love my grandmother because she always is so clueless and this is so fun for me.