With a valid ticket, one can also transport his luggage (e.g. a case, a bag), other parcels, bikes and animals. So if somebody tells you that there are some additional charges for transporting a bag or case via public transport in Warsaw, then he wilders us.
The only condition of transporting those items is not to make the travel of other passengers difficult. So one has to beware of the fact that it might be problematic to transport a bike in the crowded underground at the rush hour. . You should also remember about the fact that in public transport there are specific places designed for wheelchairs or the disabled people. Moreover, one should not keep his luggage on a seat.
Transporting animals is allowed. In case if an animal is small, then it should be kept in a cage, basket, and the like. Dogs on the other hand, as long as they are not aggressive and do not bother the passengers, will only need to be put on their leads, and be muzzled. The passenger who transports a dog is obliged to have a valid document stating the dogs vaccination against rabies (e.g. a health certificate with a proper entry).
