Which dogs are of the rarest breed? Show their names and treatment dates.
SELECT T1.name ,  T2.date_of_treatment FROM Dogs AS T1 JOIN Treatments AS T2 ON T1.dog_id  =  T2.dog_id WHERE T1.breed_code  =  ( SELECT breed_code FROM Dogs GROUP BY breed_code ORDER BY count(*) ASC LIMIT 1 )
SELECT T1.name ,  T2.date_of_treatment FROM Dogs AS T1 JOIN Treatments AS T2 ON T1.dog_id  =  T2.dog_id WHERE T1.breed_code  =  ( SELECT breed_code FROM Dogs GROUP BY breed_code ORDER BY count(*) ASC LIMIT 1 )
[{'name': 'Lyric', 'date_of_treatment': '2018-03-19 04:39:54'}, {'name': 'Houston', 'date_of_treatment': '2018-03-15 20:25:34'}, {'name': 'Lyric', 'date_of_treatment': '2018-03-08 05:26:23'}, {'name': 'Lyric', 'date_of_treatment': '2018-03-14 19:10:40'}, {'name': 'Kacey', 'date_of_treatment': '2018-03-15 19:10:02'}]