Maintenance energy requirements (MER) and bodyweights for the pet dogs in the final dataset.

1<p>Size subjectively scored as toy, small, medium, large, and giant, using the criteria of Hawthorne et al 2004 <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0109681#pone.0109681-Hawthorne1" target="_blank">[18]</a> and Hosgood & Scholl 1998 <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0109681#pone.0109681-Hosgood1" target="_blank">[85]</a>.</p>2<p>For most groups, activity level was classed as low (<1 h/day), medium (1–3 h/day), high (>3 h/day) based upon the criteria of Butterwick and Hawthorne (1998) <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0109681#pone.0109681-OToole1" target="_blank">[7]</a>; however, activity levels were classed as ‘resting’ when measurements were taken either when lying still in lateral recumbency or when cage rested. BW: body weight; DLW: doubly-labelled water; F: female; FE: feeding experiment; IC: indirect calorimetry; MER: maintenance energy requirement; M: male; Mix: study contains a mix of sexes; SD: standard deviation.</p><p>Maintenance energy requirements (MER) and bodyweights for the pet dogs in the final dataset.