Platypus females lay their eggs in a burrow.
Like the platypus, it is an egg laying mammal.
Some mammals lay their eggs in a burrow.
What lays their eggs in a burrow?
Options:
[1] no mammals
[2] all mammals
[3] dogs
[4] animals
[5] honeybees
[6] insects
[7] some mammals
[8] alpacas