Many Texans grabbed not only their valuables but also their dogs, cats, birds and other pets as they fled the flooding caused by Tropical Storm Harvey. “It seems like everyone coming off a boat is carrying a dog or cat,” said Monica Schmidt, a manager for the Houston Humane Society. After Hurricane Katrina in 2005, rescue officials have stressed the importance of evacuees bringing their pets because in New Orleans some people refused to leave for fear of abandoning their animals. Authorities had to include pets in federal guidelines for disaster planning, according to the American Society for the Prevention of Cruelty to Animals. But on Sunday night that caused confusion and anger outside Houston’s convention center, which has become a large shelter. Dozens of people with dogs arrived only to be told they could not bring them inside or that animal services were not available to care for their …