‘Looked after a friends Spinger/Setter cross, introduced it to our 18month B terrier at the time, Border was boss, no arguements there. first night, put the dogs out into the garden, walked back into the kitchen to find the springer cross sat looning at me with tail wagging like crazy. repeated the excersise, same result. The dog could clear a four foot window sill, sink worktop piled with drying plates by jumping clear through the window from a standing start!
Mad mad mad dog… was glad to hand him back!