Adjective : a lion sejant.    From Dictionary.com. 

Above a wreath a mount, thereon a squirrel sejant, cracking a nut, all proper.    From Wordnik.com.  [Collins's peerage of England; genealogical, biographical, and historical] Reference

The dial-block is placed on an Ionic column standing on six steps, and is crowned by a lion sejant holding a shield which bears the city arms.    From Wordnik.com.  [The Book of Sun-Dials] Reference

At Inverkeithing, Fifeshire, the pillar is surmounted by a unicorn, sejant and collared, supporting a shield whereon is the cross of St Andrew, and below the unicorn are the dials.    From Wordnik.com.  [The Book of Sun-Dials] Reference

The first is a battern topaz, same of thistles, emerald, ensigned with an imperial crown proper, and thereon the crest of Scotland, which is a lion sejant guardian ruby, crowned with the like crown he sits on, having in his dexter paw a sword proper, the pommel and hilt, topaz; and in the sinister a sceptre of the last.    From Wordnik.com.  [Western Worthies A Gallery of Biographical and Critical Sketches of West of Scotland Celebrities] Reference

Azure, turned up Ermin, a fox, sejant.    From Wordnik.com.  [Collins's Peerage of England; Genealogical, Biographical, and Historical] Reference