No information could be found about a US nonprofit organization called "Westlake Pet Foundation" with the specified EIN. If such an organization exists, it does not appear to have a publicly accessible presence or available details that could be used to create a Wikipedia-style article. However, it's worth noting that there is a different organization called The Lucy Pet Foundation based in Westlake Village, CA, which focuses on reducing pet overpopulation through spay/neuter clinics and supports animal welfare causes[3][4].

If the EIN or organization name might be incorrect or not publicly known, it would be best to verify the details.

In the absence of specific information about the "Westlake Pet Foundation," an article cannot be accurately composed.

[1] https://www.bissellpetfoundation.org/grant-information/partners-for-pets/ [2] https://animalcare.lacounty.gov [3] https://www.causeiq.com/organizations/the-lucy-pet-foundation,264448238/ [4] https://www.intellispect.co/organizations/264448238-the-lucy-pet-foundation-inc [5] https://dogsniffer.com/la/listing/the-lucy-foundation/