Yes - Small pets such as cats and dogs are welcome aboard Trenitalia services including first and second class and Executive, Business, Premium and Standard service options. Accompanying pets ride free of charge, are limited to one per passenger, and must be in a pet carrier that does not exceed 70x30x50cm in dimension. Larger dogs are also permitted, providing they are leashed and fitted with a muzzle. Dogs larger than those permitted within pet carriers require a ticket, purchased for half the price of a second class fare on the desired route. This option applies for most tickets and services (including Frecce, InterCity and regional trains), but passengers travelling with a pet should check their service before booking. Please note, dogs must be accompanied by their canine registry certificate and health booklet. Guide dogs may travel free of charge on all services with no ticket requirement.