This from Eric Haak:

Here are some images from a working fire on the corner of 90th and Marshfield this morning (1/2). A valiant effort was made to save the family dog with CPR being performed for 15 minutes but to no avail.

heavy smoke from house fire

Eric Haak photo

Chicago FD Truck 50

Eric Haak photo

Chicago FD Engine 121

Eric Haak photo

Firefighter administers aid to a dog pulled from a house fire

Eric Haak photo

Firefighters vent roof wth axe

Eric Haak photo