Erin took these photos a couple of days ago, and she thought sure they prove Jack must be able to see.

 

The tree was filled with a flock of black birds. Jill, who can see a little out of one eye, was not interested.

 

So if he can't see and can't hear all the chirping, how does Jack know the tree is full of birds?

 

It has to be the smell of the bird droppings all over the leaves. I suspect this is what has caught
Jack's attention, because I've seen other dogs sniff up at the tree just as Blind and Deaf Jack is doing.

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