\documentclass{article}

\input{packages}

\begin{document}

\begin{table}
\begin{center}

{\bfseries\strut Steps in the rate of long paths}

\begin{tabular}{cccc}
    \toprule
    \textbf{Animal} & 
    \begin{tabular}{@{}c@{}}\textbf{Time of step (s)}\end{tabular} & 
    \begin{tabular}{@{}c@{}}\textbf{Ratio of rates after/before}\end{tabular} \\
    \midrule
    \bf{B1}    & $2580\pm110$ & $36.4$ \\
    \bf{B2}    & $2350\pm220$ & $30.3$ \\
    \bf{C1}    & $2070\pm310$ & $5.49$ \\
    \bf{C3}    & $1280\pm80$ & $1640$ \\
    \bf{C7}    & $1680\pm280$ & $16.9$ \\
    \bottomrule
\end{tabular}

\end{center}
\end{table}
\end{document}