It is possible to travel with your pet on Thalys trains following the next conditions:

• Small dogs and other domestic animals weighing less than 6 kg: are allowed to travel for free if they travel in a cage/container with maximum dimensions of 45 x 30 x 25 cm. 
• Dogs that do not fit in a cage/container: must purchase a ticket with a special "dog" fare (single price of €30) in order to board. This can be purchased directly from the train manager. 
• Guide and assistance dogs: travel for free and do not normally wear a muzzle.