Table 1.

Categorization of the social organization of different species of shrews during the breeding season by Lukas & Clutton-Brock [5], and by Valomy et al. ([6] based on primary literature). Lukas & Clutton-Brock define species as monogamous only if pairs stay together for more than 1 year, while Valomy et al. also consider a male and a female that stay together during only one breeding season as a pair (which was categorized as solitary by Lukas & Clutton-Brock).

species	origins	Lukas & Clutton-Brock	Valomy et al.	agreement?
Crocidura leucodon	Europe	solitary	pair	no
Crocidura russula	Europe	solitary	pair	no
Crocidura shantungensis	China	solitary	solitary	yes
Cryptotis parva	North America	solitary	group	no
Neomys fodiens	Eurasia	solitary	solitary	yes
Sorex araneus	Eurasia	solitary	solitary	yes
Sorex cinereus	North America	solitary	group	no
Sorex coronatus	Europe	solitary	pair	no
Sorex ornatus	North America	solitary	group	no
Sorex unguiculatus	Russia and China	solitary	solitary	yes
Suncus varilla	South Africa	solitary	pair	no
Suncus etruscus	Europe	monogamous	no primary information found	no
355 other Soricidae species		solitary	no primary information found	no