shellkr [1] filed a deletion request for minetest-mod-animalmaterials- git [2]:

Upstream seems to have removed all sources and I can not find any alternative ones. It has not been maintained for a year or so and have started to bug. Seems abandoned...

[1] https://aur.archlinux.org/account/shellkr/ [2] https://aur.archlinux.org/pkgbase/minetest-mod-animalmaterials-git/