Zombie Dinosaurs Has Been Added Also Spinosaurus and Tyrannosaurus Got Them Old Models Back Because The Old Models Has More Downloads Than The New Models That Why
You Can Put Them in Skin Selector If You Dont Has a Skin Selector Link For The Skin Selector
https://www.gtaall.com/gta-san-andreas/cleo/4876-skin-selector-v21.html
or You Can Replace Peds