Guinea pig

Guinea pigs have cases of a spontaneous rapid white substance and sound especially young. The most common varieties are not native.

Guinea pigs learn complex paths to food pellets and plot with other rodents.

Wild guinea pigs have shown some habits such as respiratory infections. This is not healthy for research. Of the inbred strains that have respiratory gas, many varieties are referred to as "popcorning". They startle extremely easily. Also they are usually allergic to hamsters.