Though the 52-year-old actor's wife, 29-year-old Amber Heard, was officially charged in July with two counts of illegally importing their dogs, Pistol and Boo, into Australia and one count of producing a false document, Depp denied they knowingly committed the crime during his appearance on Jimmy Kimmel Live! on Thursday.
"We were under the impression we had all the paperwork done for the dogs," Depp explained. "We were there with the dogs in front of everybody."
The situation stems from May, when the couple traveled on a private jet to Queensland, where Depp was filming the latest Pirates of the Caribbean film. Their Yorkshire terriers failed to go through customs and undergo the country's required 10-day quarantine. Australia has strict quarantine regulations to prevent diseases, and bringing pets into the country also involves applying for a permit.
Despite the legal drama, Depp was able to joke about the incident.
"There might have been other things smuggled," he smiled, as the audience cheered. "Well, they seemed to miss that bit ... Might've been, you know? Could've been."
"I mean, if that's legal trouble, it's by far the most interesting I've ever experienced," he added.
Depp also criticized Australian Agriculture Minister Barnaby Joyce, who threatened to euthanize his dogs unless he took them back to California.
"This kind of weird, sweaty ... gut-man, who decided that you know, like, two, 5, 6-inch teacup Yorkshire terriers would harm the country in some way -- he's got a point, considering that Australia has the most poisonous creatures on Earth," he said sarcastically. "Everything will kill you in minutes."
However, he wasn't in such a joking mood when asked about the threats to put Heard in jail. Heard's illegal importation charges carry a maximum penalty of 10 years in prison and $75,000 fine, while the false document charge carries a penalty of a year in prison and a fine of $7,500.
"If they did that, I'd just fly to Australia and assault that man, so that I could go to jail," he said.
The Magic Mike XXL actress' court hearing in the case has been adjourned until Nov. 2.