Animal Boy featured a range of genres and musical elements that were completely new to the band and had not been featured on previous albums. Frequent use of
synthesizers, as well as minimalistic "gimmicky" lyrics, The album begins with Joey singing "Somebody Put Something in My Drink", written by Richie, who stated that he came up with the lyrics while he was dating
Frankie Valli's daughter and mistakenly drank after someone else in a nightclub. "Love Kills" was inspired by the
Alex Cox biopic Sid and Nancy (also known as
Sid and Nancy: Love Kills). The lyrics relate that the couple will never be able to win with drugs, despite the fact that the song's writer himself, Dee Dee, would later succumb to a
heroin overdose. In an interview with
East Coast Rocker, Joey explained: "What Reagan did was fucked up. Everybody told him not to go, all his people told him not to go, and he went anyway. How can you fuckin' forgive the
Holocaust? How can you say, 'Oh well, it's OK now?' That's crazy!" Dee Dee also asserted that Johnny had made the band seem
right winged. "It was the first time we could make a statement to show we weren't prejudiced," he explained. "We'd just had these
skinheads at our gigs, punks walking around wearing
swastikas." "Bonzo Goes to Bitburg", the original title, was relegated to parenthesis. "Bonzo", a pejorative nickname for Reagan, refers to a chimpanzee from
Bedtime for Bonzo, a 1951 comedy film in which Reagan starred. "Mental Hell", the next track and the second written by Joey, dealt with his recent stress with the band and his relationship with his girlfriend, Angela, ending. Author
Dave Thompson described "Eat That Rat" as "reaching back to their pure punk past". While "Eat That Rat" is one minute and thirty-seven seconds long, the shortest track on the album is the next song, "Freak of Nature", which clocks in at one minute and thirty-two seconds. Johnny explained that it was written by him and Dee Dee while changing
reels in an
open-reel audio tape recording at the studio. is the third and final song written by Joey. The album's last track, "Something to Believe In", was influenced heavily by British pop, ==Marketing and promotion==