Hi, I noticed yesterday when I took all 3 of my red foot tortoises to the fields for roaming at around 11am-noon I saw 2 of the younger torts forming at the mouth like bubbles but not the older one of possible 2 year old. It was only approximately 28-30 degrees celsius in April not yet full blown summer weather, this had occurred once or twice before with my yearling but at slightly higher temperatures in summer. there were trees & shaded areas there & not under constant sunlight as passing clouds often shielded the field. They were soaked prior to taken out as on all occasions, can they tend to dehydrate when moving about too often?