I have just sat and made 6 of these, One for each of the small furies (Gerbil, 2 degus and the 3 hammys)
Thyme (the gerbil) took a while to work out quite what it was all about, 15 minutes later there is no trace of it in her cage, and shes eaten the dari cob and little dog biscuits I put in it, and gone back to digging!
Custard and Doris (Robo and Winter White respectively) both took a slow approach. Mr Syrian is still asleep and is yet to discover this alien ball thing hourbouring a tasty treat
The Degus, well Daniel (the female) took no time at all to throw them off the top of the nest box, I think in the hope that they would break and spill their goods, only this didn't work, so she then pulled them apart with her paws and dashed off with the prize. Poor Jack (male) just sat there bewildered as usual! Jack takes a bit longer to work these things out, generally, Daniel is the one with the brains!