Mary Allen
#4 Suitable pet character.
Everyone wants just such a dog - funny, loving to run, play. With a border collie, you can be like a movie, play with a dog in "aport". Also, a trained pet is presented as an advantage over friends and acquaintances - they say, look how my Bobik can! And "to me", and "to sit" knows!
#5 The average size.
To be honest, keeping a large dog in the house is an unrealistically difficult task. Keeping a big dog in an apartment is simply unrealistic. It is extremely difficult to arrange comfort and at the same time make sure that the pet does not destroy the entire home. It is advised to keep small or medium-sized dogs in apartments. The Border Collie fits this criterion - the breed is among the average.
#6 The need for training.
If the owner has no desire to get a hyperactive clockwork toy instead of a friend, which absolutely does not listen to commands and does not understand orders, then it will be necessary to train the pet.