Here are some nice collectible items featuring the peaceful bull. I used to have the Linemar toy but stupidly sold it. All are from Heritage Auctions except the Linemar toy.
Walt Disney's Ferdinand the Bull (Whitman, 1936) Linen-like 12-page story book, illustrated with scenes from the cartoon. Hake's Price Guide to Disney Collectibles FN = $50; NM $90. From the Don Vernon Collection.
Ferdinand the Bull Cut-Outs Book #925 (Disney/Whitman, 1938). Colorful, oversized (approximately 10.5" x 16.25") cut-out book, unused, with all items intact and in Excellent condition. Listed in Hake's Disney Collectibles book with NM value = $350. From the Don Vernon Collection.
Ferdinand the Bull Presentation Cel and Background Animation Art (Walt Disney, 1938). A riled-up Ferdinand frightens some onlookers, in this trimmed cell and hand-painted background setup. This appears to be an old Courvoisier piece that has ben removed from its original frame. Image area is 11.5" x 10". The trimmed cel elements have been glued to the background; the figures on the right show a small degree of paint loss.
Ferdinand the Bull Wind Up with Box (Louis Marx & Co., 1938). Nice image of Ferdinand, includes rubber horns and a flower in his mouth that are often missing. This is a very difficult to find toy with its original box. Toy measures 7" x 3", box measures 3.25" x 5" x 6". Box and toy are both in Excellent to Near Mint. From the Larry Jacobs Collection.