Dogs in general can be house-trained because they are den-dwelling animals that have a strong instinct to keep their own nest clean.
(Dogs in general; can be; house-trained; because they are den-dwelling animals) (they; are; den-dwelling animals that have a strong instinct) (den-dwelling animals; have; a strong instinct to keep their own nest clean)
Dogs in general they den-dwelling animals
can be are have
house-trained because they are den-dwelling animals
den-dwelling animals that have a strong instinct
a strong instinct to keep their own nest clean