The present invention relates to pyridazine compounds of formulae (I) or (II) and the salts thereof, the N-oxides thereof and the salts of the N-oxides thereof, where the radical A is of the formula (A), wherein # denotes the point of attachment to the remainder of formulae (I) or (I I), and wherein A1 is N or C-RA1, A2 is N or C-RA2, A3 is N or C-RA3, A4 is N or C-RA4 and A5 is N or C-RA5, provided that one or two of the variables A1, A2, A3, A4 or A5 is N RA1, RA5, if present, are H, halogen, CN, NO2, C1-C6-alkyl, C1-C6-haloalkyl and the like RA2, RA4, if present, are H, halogen, CN, NO2, C1-C10-alkyl, C1-C10-haloalkyl and the like RA3, if present, is H, halogen, CN, NO2, C1-C10-alkyl, C1-C10-haloalkyl and the like where W is N or C-Rw and V is N or C-Rv, provided that one of the variables W or V is N Rt and Rw, if present, are H, halogen, methyl, C1-haloalkyl and the like Ru and Rv, if present, are H, halogen, C1-C4-alkyl, C1-C3-haloalkyl and the like X1 is S, O or NR1a, wherein R1a is H, C1-C10-alkyl and the like X2 is OR2a, NR2bR2c, S(0)mR2d, wherein m is 0, 1 or 2, R2a is C1-C4-alkyl, C1-C4-haloalkyl and the like, R2b, R2c are H, C1-C4-alkyl, C1-C4-haloalkyl and the like, or R2b and R2c together with the nitrogen atom to which they are bound form a heterocycle, and R2d is C1-C4-alkyl, C1-C4-haloalkyl, C3-C6-cycloalkyl and the like and R1 is H, CN, C1-C10-alkyl and the like. The present invention further relates to a method for controlling invertebrate pests, to a method for protecting plant propagation material and/or the plants which grow therefrom, to plant propagation material, comprising at least one compound according to the present invention, to a method for treating or protecting an animal from infestation or infection by parasites and to an agricultural composition containing at least one compound according to the present invention.Cette invention concerne des composés de pyridazine de formules (I) ou (II) et leurs sels, leurs N-oxydes et les sels desd
