Pet industry inflation jumped 40% in September, rising from 2.5% to 3.5% year-over-year, according to industry analyst John Gibbons of PetBusinessProfessor.com. The September Consumer Price Index (CPI) data, released October 24 after a nine-day delay due to a government shutdown, revealed petflation now exceeds the national inflation rate of 3%, which itself increased from 2.9% in August.