Portal:Animals/Did you know/2

• ...that two of the nine or ten classes in the phylum Mollusca are extinct?

• ...that bottlenose dolphins (pictured) are believed to use sponges to protect their rostra when searching for food on the sea bottom?

• ...that cattle are responsible for 18% of greenhouse gases?

• ... that super weaners may be "milk thieves" or "double mother-sucklers"?