Where is an example of onomatopoeia in The Call of the Wild by Jack London?

An example of onomatopoeia in "The Call of the Wild" is found in the description of the sounds made by dogs during their exertions, such as "the yelping and howling" that convey the intensity of their struggles and instincts. These sounds vividly bring to life the harsh realities of the wilderness and the primal nature of the dogs. Such auditory imagery enhances the reader's experience of the characters' emotions and the environment they inhabit.