Hmmmm. I’ll have to keep a close eye on their behavior and see how they’re doing. I’m pretty certain that the problem, if there’s one, isn’t dental at root cause; both rabbits are very active, enthusiastic eaters of hay, pellets, treats and greens and if they were having tooth issues I’m pretty sure I’d notice it because they’d be off their feed on something or other.
I know they probably had some stress to work off from all the traveling they’d been doing the past week, but they do seem to be pretty happy now that they’re back home. I don’t know if there’s anything they’re frustrated about, but I have started experimenting this week with leaving their X-pen up all night in order to give them more time outside their condo, amounting to 10-12 hours per 24-hour period. Maybe being able to roam and hop around in a bigger field for longer per day will help relieve any boredom they might have been feeling. I suppose, when it gets down to it, that I’m going to have to start thinking about bunnyproofing a large enough portion of my efficiency that they can roam around freely at least during periods when I’m able to supervise them.
P.S. Also, after doing a bit more research on the topic, I think Fernando’s relative youth is a factor. He’s 9-10 months old, about six to seven months younger than his mother Panda, who seems to be a much less active chewer. According to http://animals.mom.me/rabbit-sudden…10849.html ,
“Younger rabbits have bountiful levels of energy, prompting them to explore every unchartered nook and cranny in your home, chewing as they investigate. Rabbits have a burrowing instinct. Wild rabbits chew grasses to clear their way when tunneling to create a burrow. Pet rabbits may chew on carpets, wallpaper, blankets, throws and other household items in an attempt to burrow. Female rabbits have a stronger burrowing instinct than males. If your rabbit is not spayed or neutered, talk to your veterinarian about carrying out this procedure. Once a rabbit is spayed or neutered, the inappropriate chewing will decrease over time as the critter matures.”
Fernando is a very active, curious bun who likes to try to get out of the X-pen or condo when he can, so I’m now leaning toward his feeling a measure of frustration at not being able to explore as much as he wants. He’s of course been neutered (as Panda has been spayed), so I’m thinking right now the best thing to do is to keep up with giving them as much time out in the X-pen as possible and provide them with plenty of things to chew on.