My aquatics loved the Can O' series (Can O' Grasshoppers, Can O'snails, etc.) They also loved live snails. They are pretty easy to breed, and if you catch the pet store at the right time, they will scrape the baby snails off their aquariums and give them to you free!
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0.1.0 ornate box turtle
1.0.0 eastern box turtle
0.1.0 Australian shepard
2.2.0 chickens
3.2.0 children (do I still count the married ones?)
1.0.0 husband