A bull head is a wonderful excuse to practise the folds people usually skip: creasing to a mark, folding a flap back along the same line, and opening a pocket just enough to push a point inside. None of it is difficult, but all of it shows.

The horns get their shape late in the sequence, so the model looks like a blunt envelope for the first half and only becomes an animal near the end. Keep a pen nearby for the eyes; the drawing is what finally makes it read as a bull.

This bull is a head-and-horns model folded from a single square, with the horns built out of creased flaps that are later folded up and back into place. Most of the sequence is spent finding the right angle by eye, which is why every move comes with a photo.

The eyes and face are drawn in at the end, so keep a marker handy. A 15 cm square gives a head roughly the size of a matchbox, and slightly thicker paper makes the horns stand out more sharply.

Step 1.

Fold the paper in half.

Step 2.

Fold the paper in half.

Step 3.

Fold the corner over at the position shown in the photo.

Step 4.

Repeat the same fold on the back side.

Step 5.

Open the flap out.

Step 6.

Fold the flap up at the position shown in the photo.

Step 7.

Fold the flap back at the position shown in the photo.

Step 8.

Fold the flap up at the position shown in the photo.

Step 9.

Fold the flap up at the position shown in the photo.

Step 10.

Fold the paper in half.

Step 11.

Make a crease at the position shown in the photo.

Step 12.

Fold the point inward at the position shown in the photo.

Step 13.

Open the flap out.

Step 14.

Turn the model over.

Step 15.

Fold the flap up at the position shown in the photo.

Step 16.

Turn the model over.

Completion.

Draw on the eyes and the rest of the face, and your bull is finished.