Seventy five dogs were killed in a blaze at a Texas pet-boarding company on Saturday night, officials said.  Georgetown Fire Chief John Sullivan told reporters in a press briefing on Sunday that by the time fire crews responses to 911 calls, the smoke at the Ponderosa Pet Resort had made it impossible for any animals to be rescued. “It was a quick response,” Sullivan said. “Unfortunately, they were met with conditions that are our worst possible scenario and that was heavy smoke and fire involvement.” “This was not occupied by any humans but nonetheless it was by 75 pets and by no indication do I want to lead anyone to believe that that is any less tragic, it is extremely heart-wrenching for us as first responders,” he continued. Sullivan said that the cause of the blaze is currently under investigation, noting that he believes many of the dogs likely died …