United Airlines tightens rules on emotional support animals on flights

United Airlines is joining other carriers in tightening its policies on emotional support animals. Starting Jan 7, the animals will not be able to travel on flight more than 8 hours long. The airline said it has seen an increase in the number of on-board incidents with the animals, many of which are not used to spending a long time in the cabin of an aircraft. United also will not accept kittens or puppies younger than 4 months as emotional support animals, in-cabin pets or service animals. United is also limiting the acceptance of emotional support animals to dogs and cats. Acceptable service animals will now be limited to dogs, cats and miniature horses. United joins Delta Air Lines and Spirit Airlines in setting more restrictions on emotional support animals. <br/>