This is awesome. I usually do the same thing, only manually. That's how I came up with some of my favorite domains. I also accidentally stumbled upon blackmail.io doing this. At that moment I wasn't looking for single words, and infact was thinking of "black" and "mail". Lucky run, I guess.
Nice, I made something similar a while ago using regexes: https://namegrep.com/#task%28%3Anature%2Fanimals%3A%29
Mind if I replicate some of your sets? :)
I like how the domain of this service is the epitome of what it does.
Nice, but is the "pro" version really necessary? Not everything needs to be monetised..
What does the "LL" icon mean?
It doesn't work on iOS (10.2), or I just don't get it?
This would be cool (I guess) if jamming random animals into domains made sense. It's not like "rabbit" and "chimp" were chosen at random. They symbolize the product.