EL Kalstern 1954 Growth Bufo crouzi x boreas hybrids Oct. 7 Hybrids of Yosemite Valley D x Tuiga Pass crouzi & have been taking hamburger and grated liver mash in aquarium here at MVZ. However, the recently metamorphosed toads have been dying off. Today I noted scavenging by the toad (hind limbs developed) on a dead recently metamorphosed toad. I removed 8 from aquaria which had all limbs developed. This leaves 23 toads (all feeding) in large 12x20