I know it's funny when u look at extinct relatives of extinct animals today , their relatives were bigger when u look at the extinct species of cats like the sabertooth cat they were bigger then modern day lions nd tigers, when u look at speices of extinct dogs like the director wolves they were bigger then grey wolves , when u look at extinct species of bears such as short faced bears they were bigger then grizzley bears nd poler bears , when u look at extinct speices of horses like equwas can't spell it but it was bigger then modern day horses , when u look at extinct speices of elephant such as the woolly mammoth they were bigger then the African nd Asian elephant nd when u look at extinct speices of monkeys like gigantipifcud they were bigger then mindedness day gorillas nd organatabs but yet all the bigger relatives died out