Catulio, catulis, pen. cor. catulîre, Dicitur de canibus, quando venerem appetunt. Vatro. To desire the male: to goe assaut in bitches: to goe to rutter: to horsing: to blisoning in other beastes.
Catulus, A Romaine captaine in the first warres of Carthage. Also an orator that was consul with Marius.
Lewis and Short: Latin dictionary
cătŭlĭo, īre, v. n. [catulus], to desire the male, of dogs, Varr. R. R. 2, 9, 11; of the she-wolf, Laber. ap. Non. p. 90, 33.