Wild's End, tome 3 : Journey's End

An anthropomorphic tale of survival as as unlikely group of heroes makes a last ditch effort to fight back against alien invaders. Despite the military's best efforts, the alien invaders have seized a firm grip on the world. Cities have been invaded and the countryside overrun, leaving little hope for humanity's resistance. Clive, Susan, and the others are separated, struggling to find a safe haven from the alien warpath. With few options left, the survivors will need to look to the very people they once feared to make a last ditch effort to turn the tide of the war.