\documentclass{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=newest}
\usepackage{pgf-pie}
\begin{document}
\begin{tikzpicture}
    \pie[text=pin, sum=auto]{
        53/monkeys,
50/dolphins,
46/penguins,
40/lions,
38/giraffes,
35/elephants,
29/otters,
25/bears,
22/zebras,
14/hippos
    }
    \node [above=3mm, font=\large] at (current bounding box.north) {Favourite zoo animals};
\end{tikzpicture}
\end{document}