A tail of rats
Rats are very intelligent animals. Some have been trained to detect landmines.
Norway rats (also known as brown rats) are the same species as the fancy rats you find in pet stores. Fancy rats have been bred to have more colorful variations in their coat to make them visually appealing.
Rats are affectionate! Norway rats have been documented seeking out back and belly scratches from handlers, then bursting into playful bounding called “joy jumps.”