Have had several Roti.s , they do not drool ,unlike my cane corso , but they shed like a bitch in the summer , these year mine is getting shaved , roti are easily trained , good with kids , would prefer a female over male , female dogs are more independent , males seem to need more attention, as for a large dog versus small , no way your roti would jumping in your truck on its own , I would go with the rescue dog route , local pound last time I checked was 300.00 with shots not fixed that was 5 years ago ,and as for vet bills ,country vets charge less and will sell you a 1, 2 or 3 year rabi,s shot , unlike the vets in G.T,A. which are all in collusion as to prices . But a dog is a dog , its the owner that makes or breaks the dog .