\documentclass[a4paper]{article}
\usepackage{lmodern}
\usepackage{amssymb,amsmath}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{hyperref}
\usepackage{booktabs}
\usepackage{makecell}

\begin{document}
\thispagestyle{empty}

\begin{table}[h]
  \begin{tabular}{ll}
	\toprule
	Name & Description \\
	\midrule
	Cat & \makecell[l]{small \\ likes to sleep} \\
	Dog & \makecell[l]{loyal \\ needs walks} \\
    \bottomrule
  \end{tabular}
\end{table}

\end{document}
