"Last Week Tonight" host John Oliver on Sunday night announced the release of a children's book that spoofs the one second lady Karen Pence and her daughter wrote about their family rabbit, Marlon Bundo.

Oliver announced at the end of his show that he had published a book that mirrors the one about the Pence family's pet rabbit, except in Oliver's version, the rabbit is gay.

Oliver spent the bulk of Sunday's show criticizing Vice President Pence's views on LGBT issues. However, the host promised to say something nice about the vice president before the end of the segment.

Near the end of the episode, Oliver said, "I kind of like his rabbit," which is the subject of the book "A Day in the Life of the Vice President," written by Pence's daughter Charlotte Pence and illustrated by Karen Pence. The book was released Monday.

However, Oliver was critical of the fact that the tour to promote the children's book includes a stop at Focus on the Family, a religious organization that the host said promotes gay conversion therapy.

"Now, none of us can enjoy the book about Marlon Bundo," Oliver lamented.

"Or can we? It turns out, in a complete coincidence, we also wrote a book about Mike Pence's rabbit, that has also been published," he said, holding up a copy of both books.

"There are a few small differences between the two books. You'll notice right away that our rabbit has a bow tie, so there's that," Oliver said. "Also, our story is about Marlon Bundo falling in love with another boy rabbit, because our Marlon Bundo is gay."

Oliver said proceeds from his book will go toward AIDS United, a group dedicated to ending the AIDS epidemic in the U.S., and the Trevor Project, a suicide prevention organization that provides support to young members of the LGBT community.

Proceeds from the Pence family's book will go toward Tracy's Kids, which provides young cancer patients with art therapy.

As of noon on Monday, Oliver's book topped the Amazon book charts, while the original book, by Charlotte and Karen Pence, was at No. 11.

Editor's note: You can watch the entire segment, which includes profanity, in the video above.