The July, 2009 Airline Pet Travel Report contains pet incidents for the month of May, 2009.
American Airlines reports the death of a Marmoset monkey. The monkey was not placed on its assigned flight and left overnight in the Miami International baggage room. The monkey was placed on a flight the next morning and when it arrived in Los Angeles, CA it was deceased. The report from the necropsy was in included with the report. This is the first incident of a pet monkey dying during transport. The airlines are not required to report the death of non-pet animals.
American Eagle, operating for American Airlines reports the loss of a cat that escape its kennel. Very little additional information was provided in the report.
Trans States Airlines, operating for United, reported the death of a 2 year-old English Bulldog. The dog was loaded in Richmond, VA and found deceased at a layover in Chicago O'Hare. The owner gave the dog a Benadryl tablet prior to the flight to help calm the dog down at the suggestion of her vet.
Source: July 2009 Air Travel Consumer Report.