Question: what is the difference between f1 and f1b cavapoo?
Answer: F1 = 1st generation. (50% Cavalier -- 50% Poodle) This is a Cavalier King Charles Spaniel crossed with a Poodle. F1B = 1st generation backcross. ... The percentage of Cavalier and Poodle remain the same because each F1 Cavapoo parent is a 50/50 mix between the two breeds so the ratio does not change.