• Barked loudly
• Did a coyote impression
• Emulated a coyote
• Emulated a wolf
• Greeted the moon
• Howled
• Howled at the moon
• Howled like a coyote
• Howled like a hound
• Howled like a wolf
• Imitated a wolf
• Joined the coyote chorus
• Let out a long howl
• Made a howling sound
• Made sounds like hounds
• Saluted the moon, perhaps
• Sang to the moon
• Serenaded the moon
• Spoke to the moon
• Ululated
• Uttered as a hound