I'll soon be taking my 10 month old cockapoo on an 8 hour ferry journey. This will have to be spent in an on board kennel. I'm worried in case he becomes traumatised as he is not even used to travelling in a car and he will be alone for most of the trip. An online search suggests using Benadryl as a means of calming him down. Apparently it is fairly safe and routinely prescribed by vets. Has anybody any experience of this or suggestions for an alternative?