My dumb... or very smart... dog

We have two dogs, Zaya, a small cocker spaniel, and Blackie, a larger black lab mix.

Blackie is the dumb or smart dog of note...

Last year she walked through the screen early in the year (accidentally) so the lower inner corner was pulled out and effectively open all summer. Paul fixed it last fall...

Tonight Zaya pushed against the screen to come through and it didn't give, no problem... she backed off and left it alone.

Blackie then came up about 30 second later and went to push through with her head and it didn't give, so she backed off.

I was telling Paul what they were doing (he was outside at the grill, I was just inside the screen door), because I thought it was funny.

Well as I was telling Paul, all of a sudden Blackie comes barrelling at the door, head down to push through the screen...

She hadn't backed OFF because the screen wouldn't budge... she backed UP to take a running start at it. So anyway, the screen corner is pulled free again... and Paul has to fix it again...

Dumb dog.