detected during the survey (Appendix 2). This species is distinguished from other Montana toads 

 by having parallel cranial crests fused into a lump between the eyes and lacking post-orbital 

 extensions of the crests. Woodhouse's Toad lacks the lump between the eyes and has well- 

 developed post-orbital crests; Great Plains Toad has converging cranial crests and well-developed 

 post-orbital crests, but also has large white-bordered dark dorsal patches that the Canadian Toad 

 lacks. 



3) Potential Species 



Wood Frog {Rana sylvatica). This species is not yet known to occur in Montana, although there 

 are a couple of non-breeding records from inappropriate habitat that are considered as 

 introductions. The species might occur in eastern Montana in the Big Horn Mountains of Big 

 Horn County. Wood Frogs have been documented from the Wyoming portion of the mountain 

 range (Dunlap 1977). Wood Frogs are found near water in forested habitats, especially in small 

 natural ponds and sometimes in backwaters and beaver ponds. It is unlikely to be documented on 

 lands under BLM stewardship in eastern Montana. Aduhs have a prominent black facial mask 

 extending from the snout to behind the external ear drum. There may be some spotting on the 

 back, and the belly is white to cream-colored. 



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