This image of two Brazilian capybaras illustrates sexual dimorphism. Male capybaras typically have an obvious scent gland on their nose called a morillo. All capybaras have this gland but the size and prominence of the gland is related to testosterone concentration. Dominant males have large, raised, hairless morillos while less dominant males have progressively smaller, less raised and more hairy morillos. The morillo on a female is frequently not visible, although there may be an area with sparser hair or slightly raised, however the scent gland is still there, just not well developed.

This image of two Brazilian capybaras illustrates sexual dimorphism. Male capybaras typically have an obvious scent gland on their nose called a morillo. All capybaras have this gland but the size and prominence of the gland is related to testosterone concentration. Dominant males have large, raised, hairless morillos while less dominant males have progressively smaller, less raised and more hairy morillos. The morillo on a female is frequently not visible, although there may be an area with sparser hair or slightly raised, however the scent gland is still there, just not well developed.

While I was working on teaching Fiona to go through the hoop, Wesley got up on the scale and gave me the most pitiful look. “I’m doing it,” he seems to say. “I’m as good as Fiona! Where’s my treat?”If you’re ever at the Snake Farm in New Braunfels, make sure you stop by and say hello to them. Wesley would appreciate a bit of a scratch and they’d both like some lettuce if you just happen to have some on you. 

While I was working on teaching Fiona to go through the hoop, Wesley got up on the scale and gave me the most pitiful look. “I’m doing it,” he seems to say. “I’m as good as Fiona! Where’s my treat?”

If you’re ever at the Snake Farm in New Braunfels, make sure you stop by and say hello to them. Wesley would appreciate a bit of a scratch and they’d both like some lettuce if you just happen to have some on you. 

It’s amazing how smart these two capybaras, Fiona (going through hoop) and Wesley at the Snake Farm Zoo are. Now that they’re not so fearful, the pick up new tricks and behaviors very quickly. Eventually, maybe I can get them to jump through that hoop!

It’s amazing how smart these two capybaras, Fiona (going through hoop) and Wesley at the Snake Farm Zoo are. Now that they’re not so fearful, the pick up new tricks and behaviors very quickly. Eventually, maybe I can get them to jump through that hoop!

Garibaldi Rous climbing down the steps from his pool

Garibaldi Rous climbing down the steps from his pool

This is a two-year-old capybara named Tuff’n showing how capybaras become torpedo shaped when they want to move quickly through the water.

This is a two-year-old capybara named Tuff’n showing how capybaras become torpedo shaped when they want to move quickly through the water.

I wanna hold your hand!

I wanna hold your hand!

Baby Caplin Rous at about six weeks old trying to figure out how to get the milk out of his bottle.

Baby Caplin Rous at about six weeks old trying to figure out how to get the milk out of his bottle.

Fiona is a little small for an adult capybara but she is still much heavier than any non-capybara rodent. The scale here shows her weight at 100 lbs 4 oz. 

Fiona is a little small for an adult capybara but she is still much heavier than any non-capybara rodent. The scale here shows her weight at 100 lbs 4 oz. 

Five-week-old Caplin Rous drinking his milk from a bottle.

Five-week-old Caplin Rous drinking his milk from a bottle.

I am really missing my little Garibaldi Rous today. He was the world’s sweetest capybara.

I am really missing my little Garibaldi Rous today. He was the world’s sweetest capybara.

A photo for 9/11 Day.
Please remember that the cure for religious intolerance is tolerance, not just a different brand of religious intolerance.

A photo for 9/11 Day.

Please remember that the cure for religious intolerance is tolerance, not just a different brand of religious intolerance.

Fiona feels left out when I work with Wesley on the scale. Or maybe she’s just hungry. Either way, every time I turn around to look at her, she’s standing up begging for her share of attention and/or endive.

Fiona feels left out when I work with Wesley on the scale. Or maybe she’s just hungry. Either way, every time I turn around to look at her, she’s standing up begging for her share of attention and/or endive.

Caplin Rous used to love to stick his nose out the window when we were driving. This sometimes caused confusion in the surrounding traffic.

Caplin Rous used to love to stick his nose out the window when we were driving. This sometimes caused confusion in the surrounding traffic.

A wild capybara walking along a lake shore in Venezuela. This is probably a sub-dominant male but without a well developed morrillo, it is hard to distinguish the sexes.

A wild capybara walking along a lake shore in Venezuela. This is probably a sub-dominant male but without a well developed morrillo, it is hard to distinguish the sexes.

Wesley at the Snake Farm in New Braunfels has finally learned to stand on the scale! We have been working on that for months now. Too bad I hadn’t turned it on before he stepped up onto it. Oh well, next time.

Wesley at the Snake Farm in New Braunfels has finally learned to stand on the scale! We have been working on that for months now. Too bad I hadn’t turned it on before he stepped up onto it. Oh well, next time.