It was also a shit ton of CGI. This can actually be easier because unlike Avatar or The Jungle Book, there is no human interaction, so the whole thing can be CGI without working to add in people.
Response to What “As Seen On TV” Products Actually Work?:
Ours started off well, but then the dogs started trying to take the corner too sharply, instead of going through the middle. First they made a hole which the dogs kept trying to go through. Then one day in an attempt to go through the hole they created, they pulled the whole thing down.