Pitbulls are actually very nice dogs and are not as fierce as they seem. However, the overall disposition of the dog will depend on the owner. If proper training techniques are used, you won't have any problems with your dog regardless of breed.

I'm not sure if pitbulls are banned in Singapore, even if they are not, they would most probably be categorised as Cat B. Hence, a muzzle would have to be used whenever you walk him or her. To check if it is indeed banned in Singapore, you can check the AVA website.

From your list, my preferred choice would be the border collie. Once properly trained, they will be extremely loyal dogs. However, as mentioned, they have a high enerygy level. They also appreciate firm owners. I think they shed quite a lot though, so if you like border collies but would like a smaller version, i would say that shelties are more suitable.

HTH

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