(My iPad ate my previous attempt to respond.)
i dont work work with the animal movement analysis as much as I used to, so I'm a bit out of touch. But I know once Hawthorne moved from writing Hawth's tools to GME, there was no longer a toolbar within ArcGIS , but instead used the R interface. This still rely on the licensing of ArcGIS since he was using tools, and I think it still requires a Spatial Analysis license. We have had staff still with ArcView 3.x for the animal movement tools, and ArcGIS 9.x for the Hawths tools, just for the ability to use the toolbar.
if I was going to research and run some analysis again right now, I would learn the GME commands
GME | SpatialEcology.Com
Check out the corridor tools
GIS tools for connectivity, corridor, or habitat modeling - Corridordesign.org
And another very promising looking site (I haven't looked through it all yet)
Software review - GIS and Animal Space Use Looks like they mention most I have heard of, and a few I haven't.