Definitions:
a domesticated carnivorous mammal that typically has a long snout, an acute sense of smell, non-retractable claws, and a barking, howling, or whining voice.

an unpleasant, contemptible, or wicked man

used in names of dogfishes, e.g. sandy dog, spur-dog.

a mechanical device for gripping.

feet.

barriers used to keep horses off a particular part of the track.

follow (someone) closely and persistently

act lazily; fail to try one's hardest

grip (something) with a mechanical device