Property Propter Impotentiam
Defined in 2 dictionaries — Cyclopedic (1922), Ballentine's (1916)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
A qualified property which one has in animals ferae naturae, which are on his premises, and unable, by immaturity, to leave them. It, is lost when such animals become able to leave.
Ballentine's Law Dictionary
James A. Ballentine · 1916
That qualified property which one may have in animals ferae naturae too young to stray. See 2 Bl. Comm. 394.